Table 2.
Outcome measures (score range) | Unadjusted mean differences (95 % C.I.) | p | Adjustedb mean differences (95 % C.I.) | p | p for gender interactiona |
---|---|---|---|---|---|
Whole sample | |||||
Conduct problems (0–10) | 0.16 (0.06,0.26) | 0.002 | 0.05 (−0.06,0.15) | 0.406 | 0.105 |
Hyperactivity/inattention (0–10) | 0.27 (0.12,0.43) | 0.001 | 0.11 (−0.05,0.27) | 0.178 | 0.082 |
Total problems (0–40) | 0.68 (0.33,1.03) | <0.001 | 0.30 (−0.07,0.67) | 0.109 | 0.022 |
Boys | |||||
Conduct problems (0–10) | 0.08 (−0.07,0.22) | 0.314 | −0.06 (−0.21,0.10) | 0.460 | |
Hyperactivity/inattention (0–10) | 0.14 (−0.09,0.36) | 0.245 | −0.02 (−0.26,0.23) | 0.889 | |
Total problems (0–40) | 0.27 (−0.23,0.78) | 0.288 | −0.16 (−0.69,0.37) | 0.565 | |
Girls | |||||
Conduct problems (0–10) | 0.24 (0.11,0.37) | <0.001 | 0.16 (0.01,0.31) | 0.034 | |
Hyperactivity/inattention (0–10) | 0.40 (0.20,0.60) | <0.001 | 0.25 (0.04,0.47) | 0.022 | |
Total problems (0–40) | 1.08 (0.61,1.56) | <0.001 | 0.80 (0.29,1.31) | 0.002 |
aIn unadjusted model
bAdjusted for (multivariable analysis n = 4,183): maternal age, parity, highest level of maternal education, daily frequency of smoking during the second trimester, use of cannabis and/or other illicit drugs in pregnancy, home ownership, whether currently married, high scores (>12) on the Edinburgh Postnatal Depression Scale, and child gestational age, birth weight and gender