Table 1 Sociodemographic and postpartum mental health characteristics by pre-pregnancy BMI status
|  | Total sample n = 741 | Normal weight n = 531 | Underweight n = 40 | Overweight n = 114 | Obesity n = 56 | Test statistic | p-value |
|---|---|---|---|---|---|---|---|
Demographic characteristics | |||||||
 Age, M (SD) | 30.58 (4.49) | 30.73 (4.42) | 29.65 (4.26) | 30.79 (4.56) | 29.34 (4.98) | 2.30a | 0.076 |
 Nationality other than German, n (%) | 36 (4.9) | 29 (5.5) | 0 (0.0) | 5 (4.5) | 2 (3.6) | 2.70b | 0.440 |
 Married/cohabiting, n (%) | 588 (79.6) | 432 (81.7) | 27 (67.5) | 88 (77.2) | 41 (73.2) | 6.80 b | 0.079 |
 Multipara, n (%) | 296 (40.2) | 204 (38.6) | 14 (35.0) | 51 (45.1) | 27 (48.2) | 3.63b | 0.305 |
 Low education, n (%) | 22 (3.0) | 11 (2.1) | 0 (0.0) | 7 (6.1) | 4 (7.3) | 10.12 b | 0.018 |
Maternal postpartum mental health | |||||||
 Depression (BDI-II ≥ 19), n (%) | 47 (6.4) | 30 (5.6) | 2 (5.0) | 7 (6.2) | 8 (14.3) | 6.49b | 0.090 |
 Anxiety (SCL-90-R anxiety subscale >2, highest quartile), n (%) | 152 (20.5) | 108 (20.3) | 8 (20.0) | 27 (23.7) | 9 (16.1) | 1.40b | 0.706 |