Table 1 Characteristics of woman, labor, delivery, immediate postpartum period, and neonates among respondents and non-respondents.

From: Risk factors for chronic post-traumatic stress disorder development one year after vaginal delivery: a prospective, observational study

 

Non-respondents (n = 554) n/N (%)

Respondents (n = 549) n/N (%)

P

Woman characteristics

Age (years)

  

<0.001

<25

147/554 (26.5)

60/549 (10.9)

 

25–34

337/554 (60.8)

400/549 (72.9)

 

≥35

70/554 (12.7)

89/549 (16.2)

 

French nationality

548/554 (98.9)

542/549 (98.9)

0.99

Tobacco use

Never

357/548 (65.1)

393/545 (72.1)

0.001

Never during pregnancy

65/548 (11.9)

74/545 (13.6)

 

Yes during pregnancy

126/548 (23.0)

78/545 (14.3)

 

Body mass index (kg/m2)

  

0.15

<18.5

30/554 (5.4)

33/548 (6.0)

 

18.5–24.9

375/554 (67.7)

397/548 (72.5)

 

25.0–29.9

99/554 (17.9)

85/548 (15.5)

 

≥30

50/554 (9.0)

33/548 (6.0)

 

Nulliparous

246/554 (44.4)

254/549 (46.5)

0.48

Previous abortion

78/554 (14.1)

53/549 (9.7)

0.025

Previous postpartum hemorrhage

18/554 (3.2)

15/549 (2.7)

0.62

Uterine scar

47/554 (8.5)

32/549 (5.8)

0.09

Complication during pregnancy*

110/554 (19.9)

100/549 (18.2)

0.49

Hospitalization >24 h

55/554 (9.9)

53/549 (9.7)

0.89

Labor characteristics

Induction of labor

88/554 (15.9)

85/549 (15.5)

0.95

Duration of labor >6 h

178/554 (32.1)

190/549 (34.7)

0.36

Epidural analgesia

540/554 (97.5)

526/549 (96.0)

0.17

Oxytocin during labor**

450/554 (81.2)

434/549 (79.2)

0.40

Instrumental delivery

96/554 (17.3)

67/549 (12.2)

0.02

Episiotomy

228/554 (41.2)

218/549 (39.7)

0.62

3rd- or 4th-degree perineal lacerations

7/554 (1.3)

7/549 (1.3)

0.99

Manual removal of placenta

22/554 (4.0)

32/549 (5.8)

0.15

Blood loss ≥500 ml

56/554 (10.1)

60/549 (10.9)

0.66

Blood loss ≥1,000 ml

17/554 (3.1)

14/549 (2.5)

0.60

Immediate postpartum period

Postpartum hemoglobin at D2 [mean (SD)]

10.8 (1.4) (n = 548)

11.0 (1.4) (n = 540)

 

Hemoglobin level <9 g/dl at D2

49/548 (8.9)

51/540 (9.4)

0.77

Bad memories of delivery

81/554 (14.8)

56/549 (10.3)

0.025

Neonatal outcome

Birth weight (g) (mean [SD])

3340 (441) (n = 554)

3383 (425) (n = 548)

0.10

5-min Apgar score <7

3/554 (0.5)

1/549 (0.2)

0.62

pH <7.00

0

0

—

Transfer to neonatal intensive care unit

23/554 (4.1)

15/549 (2.7)

0.20

  1. *Complication during pregnancy including thrombocytopenia, gestational diabetes, bleeding, hypertension disorders, preterm labor. **First and second stage.
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