Table 2.
Groups | Statistics | |||
---|---|---|---|---|
Individuals with PPD | Individuals without PPD | |||
N | 48 | 50 | ||
n (%) | n (%) | X2-test | ||
Depressive episode in life (yes/no) | 21/27 | 1/49 | X2 (N = 98, df = 1) = 24.52 *** | |
M (SD) | M (SD) | t-tests | Cohen’s d | |
Age (years) | 25.88 (4.28) | 25.22 (4.88) | t(96) = 0.71 | 0.14 (S) |
Beck Depression Inventory | 28.08 (9.19) | 4.30 (3.13) | t(96) = 17.28 *** | 3.49 (L) |
Edinburgh Postnatal Depression Scale | 15.69 (3.47) | 3.82 (2.76) | t(96) = 18.77 *** | 3.78 (L) |
Gestational age (days) | 270.23 (12.79) | 274.04 (11.92) | t(96) = 1.53 | 0.00 (-) |
Apgar score at delivery | 8.81 (0.70) | 9.98 (0.25) | t(96) = 1.58 | 2.23 (L) |
Apgar score 10′ after delivery | 9.85 (0.50) | 9.96 (0.20) | t(96) = 1.38 | 0.29 (S) |
Notes *** = p < 0.001. (S) = small effect: t size; (M) = medium effect size; (L) = large effect size.