Table 2 Characteristics of mothers and infants in the BD and non-clinical sample
Variable | BD sample N = 26 | Non-clinical sample N = 30 | p-value | ||
Maternal age at inclusion (years) mean ± sd; range | 30.5 ± 4.6; 22–37 | 33.3 ± 5.0; 27–44 | 0.04 | ||
n | % | n | % | ||
Primary diagnosis | Not applicable | ||||
BD I | 7 | 27 | 0 | ||
BD II | 19 | 73 | 0 | ||
Parity | 0.32 | ||||
Primiparous | 13 | 50 | 20 | 67 | |
Multiparous | 13 | 50 | 10 | 33 | |
Completed education | < 0.001 | ||||
Primary school | 8 | 31 | 1 | 3 | |
Secondary school | 5 | 19 | 5 | 17 | |
Bachelor’s degree | 11 | 42 | 8 | 27 | |
Master’s degree | 2 | 8 | 16 | 53 | |
Work participation when not pregnant | 0.002 | ||||
Working full-time | 12 | 46 | 23 | 77 | |
Working part-time +/− receiving benefits | 4 | 15 | 2 | 7 | |
Receiving benefits only | 8 | 31 | 0 | ||
Unemployed | 1 | 4 | 1 | 3 | |
School | 1 | 4 | 4 | 13 | |
Infant gender | 0.91 | ||||
Girl | 10 | 38 | 12 | 40 | |
Boy | 16 | 62 | 18 | 60 | |
Infant exposure to BD medication | Not applicable | ||||
In pregnancy | 17 | 65 | 0 | ||
In pregnancy + 2–3 months postpartum | 10 | 38 | 0 | ||
Infant birth weight (gram) | 3632 ± 507; | 3720 ± 434; | 0.49 | ||
mean ± sd; range | 2905–5085 | 2911–4715 | |||
Infant gestational age (months) | 39.5 ± 1.2; | 40 ± 1.2; | 0.13 | ||
mean ± sd; range | 37.2–41.6 | 37–42 | |||