Table 4 Maternal, obstetric and child characteristics in each PPD category

Maternal age (years), median (IQR)

26 (23–30)

26 (23–34)

26 (25–34)

25 (22–35)

26 (23–26)

27 (24–30)

p = 0.94

Parity, median

2

1.5

2

2

2

2

p = 0.94

Birth weight (kg), mean (SD)

3.4 (0.6)

3.3 (0.5)

3.0 (0.7)

3.3 (0.7)

3.2 (0.7)

2.9 (0.6)

p = 0.28

Mother’s education level, median^b

2

2

2

1

0.5

2

p = 0.04

Child's sex = male

27 (61%)

13 (59%)

6 (50%)

3 (30%)

1 (17%)

4 (80%)

p = 0.30

Child’s sex as desired

42 (95%)

20 (91%)

10 (77%)

11 (100%)

6 (100%)

4 (80%)

p = 0.18

Planned pregnancy

24 (55%)

11 (50%)

7 (54%)

6 (55%)

2 (33%)

2 (40%)

p = 0.94

Hospital delivery

43 (98%)

22 (100%)

13 (100%)

11 (100%)

6 (100%)

3 (60%)

p = 0.02

Caesarean birth

11 (25%)

3 (14%)

3 (23%)

2 (18%)

0 (0%)

2 (40%)

p = 0.59