Table 1 Basic characteristics of the PMDs and non-PMDs groups

Age at delivery, mean (SD) [years]

33.7 (4.5)

34.6 (5.2)

0.18

Parity, multipara, n (%)

24 (45.3%)

354 (48.6%)

0.71

Pre-pregnancy body mass index, mean (SD)

22.8 (5.0)

21.3 (3.4)

0.03

Mother's educational level

 Junior high school or high school, n (%)

18 (34.0%)

258 (35.4%)

0.88

 Vocational school, junior college, university, or graduate school, n (%)

31 (58.5%)

405 (55.7%)

History of psychiatric or psychosomatic consultation, n (%)

18 (34.0%)

92 (12.6%)

 < 0.001

Infertility treatment, n (%)

21 (40.0%)

292 (40.1%)

1

Problems (relationship with partner, finances, violence, or unemployment), n (%)

7 (13.2%)

21 (2.9%)

 < 0.001

Gestational week of delivery, mean (SD) [weeks]

37.7 (2.5)

37.7 (2.7)

0.91

Mode of delivery, cesarean section, n (%)

24 (45.3%)

370 (50.8%)

0.51

Weeks of gestaion responding to PSST, mean (SD)

17.3 (9.3)

20.1 (9.5)

0.03

Weeks of gestation responding to EPDS during pregnancy, mean (SD)

22.1 (6.3)

22.9 (6.8)

0.34