| cpr | social security number | 
                                            
                                                | p_group | radomisation group | 
                                            
                                                | age | mothers age at birth | 
                                            
                                                | agegr | age categories (RECODE of "mothers age at birth") | 
                                            
                                                | bmi_pre | pregestational bmi | 
                                            
                                                | bmigr | bmi categories (RECODE of "pregestational bmi") | 
                                            
                                                | date_cs | date of Caesarean section | 
                                            
                                                | csyear | year of caesarean section | 
                                            
                                                | hospital | hospital | 
                                            
                                                | cs_type | type of ceasarean section | 
                                            
                                                | type_ab | type of antibiotic during surgery | 
                                            
                                                | type_incision | type of incision | 
                                            
                                                | uterus_clos | closure of the uterus | 
                                            
                                                | uterus_sut | use of extra sutures when closing the uterus | 
                                            
                                                | no_sut | number of extra sutures | 
                                            
                                                | subcutis_clos | closure of subcutis | 
                                            
                                                | skin_clos | suture materials used for skin closure | 
                                            
                                                | knife_time | Operative time (in minutes) | 
                                            
                                                | event_surgery | failure to comply with standard procedure during surgery | 
                                            
                                                | amnioinfusion | amnioinfusion during birth | 
                                            
                                                | rup_memb | mechanical rupture of membranes during birth | 
                                            
                                                | maternal_request | caesarean by maternal request | 
                                            
                                                | paritet | Mother's birth number | 
                                            
                                                | scalp_blood | scalp blood sample | 
                                            
                                                | bleeding | bleeding during caesarean section (in milliliters) | 
                                            
                                                | singleton | number of infants | 
                                            
                                                | nulliparous | no previous live births | 
                                            
                                                | smoking_mom | smoking status | 
                                            
                                                | prom | premature rupture of membranes | 
                                            
                                                | diabetes | diabetes | 
                                            
                                                | hypertension | hypertension | 
                                            
                                                | preeclampsia | preeclampsia | 
                                            
                                                | beddays | number of beddays associated with caesarean section | 
                                            
                                                | control_day5 | attended the preplanned 5-days visit | 
                                            
                                                | type_control | type of control | 
                                            
                                                | days_control | number of days from caesarean section to control day 5 | 
                                            
                                                | remove_skin_clos | suture materials used for skin closure | 
                                            
                                                | change_before_control | dressing change before control | 
                                            
                                                | reddening | wound assessment: reddening of the wound | 
                                            
                                                | warmth | wound assessment: warmth of the wound | 
                                            
                                                | soreness | wound assessment: soreness of the wound | 
                                            
                                                | exudate_day5 | wound assessment: exudate from wound at day 5 | 
                                            
                                                | grade_wound_infection | wound assessment: sign of infection day5 | 
                                            
                                                | grade_wound_pustel | wound assessment: pustel day5 | 
                                            
                                                | grade_wound_cellulitis | wound assessment: cellulitis day5 | 
                                            
                                                | grade_wound_swollen_glands | wound assessment: swollen glands day5 | 
                                            
                                                | grade_wound_systemic_symptoms | wound assessment: sign of systemic symptoms day5 | 
                                            
                                                | grade_wound_systemic_symptoms_fe | fever | 
                                            
                                                | grade_wound_systemic_symptoms_un | unwell | 
                                            
                                                | grade_wound_systemic_symptoms_na | nausic | 
                                            
                                                | grade_wound_systemic_symptoms_in | influenza | 
                                            
                                                | treatment_infection_bandage_crea | treatment of infection: bandage or cream | 
                                            
                                                | treatment_infection_oral_antibio | treatment of infection: oral antibiotics | 
                                            
                                                | treatment_infection_iv_im_antibi | treatment of infection: iv or im antibiotics | 
                                            
                                                | treatment_infection_rehospitaliz | treatment of infection: rehospitalize | 
                                            
                                                | treatment_infection_sutur_agraf_ | treatment of infection: premature removal of sutur or staples | 
                                            
                                                | pain_worst | worst pain experience from birth to control day 5 | 
                                            
                                                | pain_average | average pain experience from birth to control day 5 | 
                                            
                                                | pain_pico_bandage | pain experience at dressing removal day 5 | 
                                            
                                                | cosmetic_wound_plain | cosmetic assessment: is wound edges coplanar | 
                                            
                                                | cosmetic_wrinkles | cosmetic assessment: is wound edges wrinkled | 
                                            
                                                | cosmetic_wound_seperate | cosmetic assessment: is wound edges seperated | 
                                            
                                                | cosmetic_wound_inverted | cosmetic assessment: is wound edges inverted | 
                                            
                                                | cosmetic_deform | cosmetic assessment: is the wound deform | 
                                            
                                                | wound_picture | Did the nurse take a picture day 5 | 
                                            
                                                | wound_visual | overall cosmetic score assessed by a nurse | 
                                            
                                                | questionnaire_day30 | did the patient answer the questionnaire day 30 | 
                                            
                                                | mo_day30 | EuroQol EQ-5D-5L: mobility (30 days followup) | 
                                            
                                                | sc_day30 | EuroQol EQ-5D-5L: selfcare (30 days followup) | 
                                            
                                                | ua_day30 | EuroQol EQ-5D-5L: usual activities (30 days followup) | 
                                            
                                                | pd_day30 | EuroQol EQ-5D-5L: pain/discomfort (30 days followup) | 
                                            
                                                | ad_day30 | EuroQol EQ-5D-5L: anxiety/depression (30 days followup) | 
                                            
                                                | eq_day30 | EuroQol EQ-5D-5L: combination of the five EQ5D questions (30 days followup) | 
                                            
                                                | eq_value_day30 | EuroQol EQ-5D-5L: eq index - Danish index values (30 days followup) | 
                                            
                                                | eq_vas_day30 | EuroQol EQ-5D-5L: Self-rated health status - eq VAS (30 days followup) | 
                                            
                                                | education | What scool education did you last complete? | 
                                            
                                                | vocational | Whar vocational education did you last complete? | 
                                            
                                                | current_vocational | are you currently undertaking a vocational education | 
                                            
                                                | current_vocational_other | Please describe if you are completing aother type of ongoing vocational education | 
                                            
                                                | exercise | which description fits your physical activity in the last year before your pregnancy? | 
                                            
                                                | smoking_status | Do you smoke now - after given birth? | 
                                            
                                                | smoking_during | Did you smok during pregnancy? | 
                                            
                                                | no_of_cigarets | on average, how many cigarettes did you smoke per day during pregnancy? | 
                                            
                                                | alcohol_before | did you drink alcohol before your pregnancy? | 
                                            
                                                | alcohol_during | did you drink alcohol during pregnancy? | 
                                            
                                                | daily_alcohol | did you have a daily consumption of alcohol during pregnancy? | 
                                            
                                                | alcohol_now | how much alcohol did you on average comsume the last month (after birth)? | 
                                            
                                                | height2 | your height (in whole centimeters) | 
                                            
                                                | weight2 | you weigh one month after your birth (in whole kilo)) | 
                                            
                                                | cystitis_during | have you been treated for a urinary tract infection during pregnancy? | 
                                            
                                                | contact_gp_phone | have you been in contact with your GP by phone after birth due to infection | 
                                            
                                                | contact_gp_per | have you personally been in contact with your GP after birth due to infection | 
                                            
                                                | outpatient_clinic | Have you since your birth been to a outpatient clinic in the hospital | 
                                            
                                                | readmission | Have you since your birth been readmitted to hospital | 
                                            
                                                | cystitis | postpartum complications: urinary tract infection during the first 30 days after giving birth | 
                                            
                                                | wi | postpartum complications: wound infection during the first 30 days after giving birth | 
                                            
                                                | endomitritis | postpartum complications: endomitritis during the first 30 days after giving birth | 
                                            
                                                | mastitis | postpartum complications: mastitis during the first 30 days after giving birth | 
                                            
                                                | other_compli | postpartum complications: other types of complications during the first 30 days after giving birth | 
                                            
                                                | no_compli | postpartum complications: no complications during the first 30 days after giving birth | 
                                            
                                                | antibiotics | have you received any antibiotic treatment postpartum | 
                                            
                                                | ab_week1 | were you treated with antibiotics week 1 after your birth? | 
                                            
                                                | ab_week2 | were you treated with antibiotics week 2 after your birth? | 
                                            
                                                | ab_week3 | were you treated with antibiotics week 3 after your birth? | 
                                            
                                                | ab_week4 | were you treated with antibiotics week 4 after your birth? | 
                                            
                                                | ab_week5 | were you treated with antibiotics week 5 after your birth? | 
                                            
                                                | ab_dontrememberweek | were you treated with antibiotic after your birth but you don´t remember when? | 
                                            
                                                | ab_cystitis | what was the reason you received antibiotic treatment?: urinary tract infection | 
                                            
                                                | ab_wi | what was the reason you received antibiotic treatment?: wound infection | 
                                            
                                                | ab_endomitritis | what was the reason you received antibiotic treatment?: endomitritis | 
                                            
                                                | ab_mastitis | what was the reason you received antibiotic treatment?: mastitis | 
                                            
                                                | ab_othercompli | what was the reason you received antibiotic treatment?: other reason | 
                                            
                                                | ab_breastfeed | did you breast-feed your child while you received antibiotic treatment? | 
                                            
                                                | painful | Patient Scar Assessment Scale: Is the scar been painful? (30 days followup) | 
                                            
                                                | itching | Patient Scar Assessment Scale: Is the scar itching? (30 days followup) | 
                                            
                                                | color | Patient Scar Assessment Scale: Is the color of the scar different (30 days followup) | 
                                            
                                                | stiffness | Patient Scar Assessment Scale: Is the scar more stiff? (30 days followup) | 
                                            
                                                | thickness | Patient Scar Assessment Scale: Is the thickness of the scar different? (30 days followup) | 
                                            
                                                | irregular | Patient Scar Assessment Scale: Is the scar irrgular? (30 days followup) | 
                                            
                                                | cosmetic | How satisfied are you with the cosmetic appearance of the scar? (30 days followup) | 
                                            
                                                | previouscs | have you previously given birth by caesarean section? | 
                                            
                                                | fever | have you had one or more of the following symptoms since you gave birth: fever | 
                                            
                                                | pain | have you had one or more of the following symptoms since you gave birth: pain in or around the surgical wound? | 
                                            
                                                | reedness | have you had one or more of the following symptoms since you gave birth: reedness around the surgival wound? | 
                                            
                                                | warmth_swelling | have you had one or more of the following symptoms since you gave birth: warmth or swelling around the surgical wound? | 
                                            
                                                | exudate | have you had one or more of the following symptoms since you gave birth: exudate from the surgical wound? | 
                                            
                                                | dehiscence | have you had one or more of the following symptoms since you gave birth: dehiscence of the surgical wound? | 
                                            
                                                | other_symptoms | have you had one or more of the following symptoms since you gave birth: other symptoms? | 
                                            
                                                | bmi_post | bmi 30 days postpartum | 
                                            
                                                | bmigr2 | bmi postpartum categories (RECODE bmi 30 days postpartum) | 
                                            
                                                | date_control_visit3 | date attenting 6 months followup | 
                                            
                                                | control_visit3 | did the patient attend 6 months followup | 
                                            
                                                | length_scar_visit3 | Length of scar at 6 months followup (i millimeters) | 
                                            
                                                | width_scar_visit3 | Width of scar at 6 months followup (in millimeters) | 
                                            
                                                | more_than_one_scar_visit3 | Presence of more than one scar on the abdomen (6 months followup) | 
                                            
                                                | overhang_visit3 | Overhang of skin (6 months followup) | 
                                            
                                                | fungus_visit3 | Fungus present (6 months followup) | 
                                            
                                                | intertrigo_visit3 | Intertrigo present (6 months followup) | 
                                            
                                                | manchester_colour_visit3 | The Manchester Scar Scale: Colour (6 months followup) | 
                                            
                                                | manchester_matte_shiny_visit3 | The Manchester Scar Scale: Matte vs shiny (6 months followup) | 
                                            
                                                | manchester_contour_visit3 | The Manchester Scar Scale: Contour (6 months followup) | 
                                            
                                                | manchester_distortion_visit3 | The Manchester Scar Scale: Distortion (6 months followup) | 
                                            
                                                | manchester_texture_visit3 | The Manchester Scar Scale: Texture (6 months followup) | 
                                            
                                                | stonybrook_width_visit3 | The Stony Brook Scar Evaluation Scale: Width (6 months followup) | 
                                            
                                                | stonybrook_height_visit3 | The Stony Brook Scar Evaluation Scale: Height (6 months followup) | 
                                            
                                                | stonybrook_colour_visit3 | The Stony Brook Scar Evaluation Scale: Colour (6 months followup) | 
                                            
                                                | stonybrook_marks_visit3 | The Stony Brook Scar Evaluation Scale: Hatch marks or suture marks (6 months followup) | 
                                            
                                                | stonybrook_appearance_visit3 | The Stony Brook Scar Evaluation Scale: Overall appearance (6 months followup) | 
                                            
                                                | aesthetic_appearance_visit3 | The overall aesthetic appearance of the scar (VAS scale) (6 months followup) | 
                                            
                                                | painful_visit3 | Patient Scar Assessment Scale: Is the scar been painful? (6 months followup) | 
                                            
                                                | itching_visit3 | Patient Scar Assessment Scale: Is the scar itching? (6 months followup) | 
                                            
                                                | color_visit3 | Patient Scar Assessment Scale: Is the color of the scar different? (6 months followup) | 
                                            
                                                | stiff_visit3 | Patient Scar Assessment Scale: Is the scar more stiff? (6 months followup) | 
                                            
                                                | thick_visit3 | Patient Scar Assessment Scale: Is the thickness of the scar different? (6 months followup) | 
                                            
                                                | irregular_visit3 | Patient Scar Assessment Scale: Is the scar irrgular? (6 months followup) | 
                                            
                                                | cosmetic_visit3 | How satisfied are you with the cosmetic appearance of the scar? (6 months followup) | 
                                            
                                                | mo_visit3 | EuroQol EQ-5D-5L: mobility (6 months followup) | 
                                            
                                                | sc_visit3 | EuroQol EQ-5D-5L: selfcare (6 months followup) | 
                                            
                                                | ua_visit3 | EuroQol EQ-5D-5L: usual activities (6 months followup) | 
                                            
                                                | pd_visit3 | EuroQol EQ-5D-5L: pain/discomfort (6 months followup) | 
                                            
                                                | ad_visit3 | EuroQol EQ-5D-5L: anxiety/depression (6 months followup) | 
                                            
                                                | health_today_visit3 | VEuroQol EQ-5D-5L: Self-rated health status - eq VAS (6 months followup) | 
                                            
                                                | eq_visit3 | EuroQol EQ-5D-5L: combination of the five EQ5D questions (6 months followup) | 
                                            
                                                | eq_value_visit3 | EuroQol EQ-5D-5L: eq index - Danish index values (6 months followup) | 
                                            
                                                | date_control_visit4 | date attenting 12 months followup | 
                                            
                                                | control_visit4 | did the patient attend 12 months followup | 
                                            
                                                | length_scar_visit4 | Length of scar at 12 months followup (i millimeters) | 
                                            
                                                | width_scar_visit4 | Width of scar at 12 months followup (i millimeters) | 
                                            
                                                | more_than_one_scar_visit4 | Presence of more than one scar on the abdomen (12 months followup) | 
                                            
                                                | overhang_visit4 | Overhang of the skin (12 months followup) | 
                                            
                                                | fungus_visit4 | Fungus present (12 months followup) | 
                                            
                                                | intertrigo_visit4 | Intertrigo present (12 months followup) | 
                                            
                                                | manchester_colour_visit4 | The Manchester Scar Scale: Colour (12 months followup) | 
                                            
                                                | manchester_matte_shiny_visit4 | The Manchester Scar Scale: Matte vs shiny (12 months followup) | 
                                            
                                                | manchester_contour_visit4 | The Manchester Scar Scale: Contour (12 months followup) | 
                                            
                                                | manchester_distortion_visit4 | The Manchester Scar Scale: Distortion (12 months followup) | 
                                            
                                                | manchester_texture_visit4 | The Manchester Scar Scale: Texture (12 months followup) | 
                                            
                                                | stonybrook_width_visit4 | The Stony Brook Scar Evaluation Scale: Width (12 months followup) | 
                                            
                                                | stonybrook_height_visit4 | The Stony Brook Scar Evaluation Scale: Height (12 months followup) | 
                                            
                                                | stonybrook_colour_visit4 | The Stony Brook Scar Evaluation Scale: Colour (12 months followup) | 
                                            
                                                | stonybrook_marks_visit4 | The Stony Brook Scar Evaluation Scale: Hatch marks or suture marks (12 months followup) | 
                                            
                                                | stonybrook_appearance_visit4 | The Stony Brook Scar Evaluation Scale: Overall appearance (12 months followup) | 
                                            
                                                | aesthetic_appearance_visit4 | The overall aesthetic appearance of the scar (VAS scale) (12 months followup) | 
                                            
                                                | painful_visit4 | Patient Scar Assessment Scale: Is the scar been painful? (12 months followup) | 
                                            
                                                | itching_visit4 | Patient Scar Assessment Scale: Is the scar itching? (12 months followup) | 
                                            
                                                | color_visit4 | Patient Scar Assessment Scale: Is the color of the scar different (12 months followup) | 
                                            
                                                | stiff_visit4 | Patient Scar Assessment Scale: Is the scar more stiff? (12 months followup) | 
                                            
                                                | thick_visit4 | Patient Scar Assessment Scale: Is the thickness of the scar different? (12 months followup) | 
                                            
                                                | irregular_visit4 | Patient Scar Assessment Scale: Is the scar irrgular? (12 months followup) | 
                                            
                                                | cosmetic_visit4 | How satisfied are you with the cosmetic appearance of the scar? (12 months followup) | 
                                            
                                                | mo_visit4 | EuroQol EQ-5D-5L: mobilit (12 months followup) | 
                                            
                                                | sc_visit4 | EuroQol EQ-5D-5L: selfcare (12 months followup) | 
                                            
                                                | ua_visit4 | EuroQol EQ-5D-5L: usual activities (12 months followup) | 
                                            
                                                | pd_visit4 | EuroQol EQ-5D-5L: pain/discomfort (12 months followup) | 
                                            
                                                | ad_visit4 | EuroQol EQ-5D-5L: anxiety/depression (12 months followup) | 
                                            
                                                | health_today_visit4 | EuroQol EQ-5D-5L: Self-rated health status - eq VAS (12 months followup) | 
                                            
                                                | eq_visit4 | EuroQol EQ-5D-5L: combination of the five EQ5D questions (12 months followup) | 
                                            
                                                | eq_value_visit4 | EuroQol EQ-5D-5L: eq index - Danish index values (12 months followup) | 
                                            
                                                | d_subcutisclos | dummy variable for closure of subcutis | 
                                            
                                                | d_diabetes | dummy variable for diabetes | 
                                            
                                                | obese | dummy variable for obesity | 
                                            
                                                | d_nulliparous | dummy variable for first-time mother | 
                                            
                                                | d_smok | dummy variable for smoking during pregnancy | 
                                            
                                                | d_alcbef | dummy variable for drinking alcohol before pregnancy | 
                                            
                                                | d_sectio | dummy variable for type of ceasarean section | 
                                            
                                                | d_knifetime | dummy variable for length of knifetime | 
                                            
                                                | d_bed | dummy variable for length of hospital admission | 
                                            
                                                | d_bleed | dummy variable for bleeding during surgery | 
                                            
                                                | d_age | dummy variable for age +/-35 | 
                                            
                                                | d_job | dummy variable for last completed vocational education | 
                                            
                                                | amb | outpatient visit within 35 days postpartum | 
                                            
                                                | rehos | rehospitalised within 35 days postpartum | 
                                            
                                                | reopr_wi | reoperation which could be related to wound infection | 
                                            
                                                | reopr_bleed | reoperation which could be related to hematoma | 
                                            
                                                | reopr_endo | reoperation which could be related to endometritis | 
                                            
                                                | reopr_total1 | total number of reoperations related to wound complications | 
                                            
                                                | ab_lmr | prescriptions of any antibiotics - dispensed within date_cs+35 | 
                                            
                                                | ab_total | total number of prescriptions within date_cs+35 | 
                                            
                                                | ab_post | prescriptions of any antibiotics or antibiotics during hospitalisation | 
                                            
                                                | post_wi | post-surgical wound infection (combined data from different data sources) | 
                                            
                                                | sup_wi | post-surgical superficial wound infection | 
                                            
                                                | deep_wi | post-surgical deep wound infection | 
                                            
                                                | LMR_cost_total | prescriptions of antibiotics, total cost 3 months (in DKK) | 
                                            
                                                | cost_GPcontacts | GP visits, total cost 3 months (in DKK) | 
                                            
                                                | cost_outpatient | outpatient visits, total cost 3 months (in DKK) | 
                                            
                                                | cost_cs_admission | caesarean section admission, total cost (in DKK) | 
                                            
                                                | cost_rehospitalisation | readmission to hospital, total cost 3 months (in DKK) | 
                                            
                                                | CostTotal | Total cost from caesarean section to 3 months after caesarean section (in DKK) |