Table 1 Population characteristics

Age (years):

30.8 [19–45]

Socio-occupational category (%):

 - Office, sales, and service staff

1031 (48.4%)

 - Manager

366 (17.2%)

 - Intermediate professional

363 (17.1%)

 - No occupation

200 (9.4%)

 - Tradesperson, shopkeeper, small-business owner

92 (4.3%)

 - Blue-collar

61 (2.9%)

 - Farmer

15 (0.7%)

Maternity unit status (%):

 - Private

524 (24.7%)

 - Public

1534 (72.2%)

 - Private nonprofit

67 (3.2%)

Maternity unit level (%):

 - 1

512 (24.1%)

 - 2

1267 (59.6%)

 - 3

346 (16.3%)

Number of deliveries/year (%):

 - < 1000

440 (20.7%)

 - 1000 to 3000

1089 (51.2%)

 - > 3000

596 (28.1%)

Parity (%):

 - Nulliparous

943 (44.2%)

 - Parous

1192 (55.8%)

Pregnancy (%):

 - Singleton

2081 (98.6%)

 - Twin

28 (1.3%)

 - Triplet or more

1 (0.1%)

Time until first consultation at the maternity ward (%):

 - < 6th month

1053 (49.4%)

 - > or = 6th month

1005 (47.2%)

 - No contact

55 (2.6%)

 - Don't remember

17 (0.8%)

Characteristics of the delivery (%):

 Day/Night^a

983 (46.1%) / 1148 (53.9%)

 Epidural analgesia

1696 (80.0%)

 Vaginal

1826 (85.6%)

 Cesarean:

307 (14.4%)

 - Scheduled

78 (25.4%)

 - During labor

229 (74.5%)^b

 Instrumental vaginal delivery:

311 (17.1%)

 - Vacuum extraction

216 (69.5%)

 - Forceps or Spatulas

129 (41.5%)

 Episiotomy

247 (13.5%)

 Induction of labor:

523 (24.6%)

 - Cervical ripening

296 (13.9%)

 - Induction by oxytocin

227 (10.7%)

 Transfer of the newborn (%)

54 (2.6%)

Birth plan (%):

 - Verbal

587 (27.5%)

 - Written

197 (9.2%)