Table 2.
Difficulties | Healthy controls (n = 98) | Non-affected siblings of BD probands (n = 120) | BD probands (n = 120) |
---|---|---|---|
N (%) | N (%) | N (%) | |
Obstetrical | 56 (57) | 78 (65) | 79 (66) |
Perinatal | 13 (13) | 16 (13) | 17 (14) |
Infantile | 12 (12)a | 30 (25)b | 58 (48) |
Controls vs. BD probands, p < 0.05.
Non-affected siblings vs. BD probands, p < 0.05.
Abbreviations: BD = bipolar disorder.