Table 3a. Association (regression coefficient (95% confidence interval)) of mother’s IQ at age 11 with offspring conduct, emotional and attention problem scores at age 4+ years.
| Adjustments | |||||||
|---|---|---|---|---|---|---|---|
| N / Mean (SD) | Offspring age and sex | Offspring age, sex and SES | Offspring age, sex and IQ | Offspring age, sex and HOME score | Offspring age, sex and parental malaise | Multiple1 | |
| Children aged 4 to 6 2 | |||||||
| Conduct problems score | |||||||
| SD increase3 | 420 / 22.8 (5.1) | −0.33 (−0.91, 0.25) | −0.33 (−0.93, 0.28) | −0.20 (−0.79, 0.40) | 0.04 (−0.55, 0.63) | −0.14 (−0.66, 0.37) | 0.17 (−0.40, 0.74) |
| P 4 | 0.26 | 0.29 | 0.52 | 0.89 | 0.58 | 0.55 | |
| Emotional problems score | |||||||
| SD increase3 | 422 / 15.9 (3.3) | 0.05 (−0.31, 0.41) | 0.08 (−0.30, 0.45) | 0.04 (−0.32, 0.40) | 0.21 (−0.15, 0.57) | 0.13 (−0.21, 0.47) | 0.23 (−0.13, 0.59) |
| P 4 | 0.79 | 0.69 | 0.83 | 0.25 | 0.46 | 0.22 | |
|
| |||||||
| Children aged 7+ 5 | |||||||
| Conduct problems score | |||||||
| SD increase3 | 833 / 9.4 (2.3) | −0.49 (−0.73, −0.25) | −0.53 (−0.78, −0.28) | −0.44 (−0.69, −0.19) | −0.33 (−0.57, −0.09) | −0.31 (−0.54, −0.09) | −0.22 (−0.45, 0.02) |
| P 4 | <0.001 | <0.001 | 0.001 | 0.01 | 0.01 | 0.07 | |
| Emotional problems score | |||||||
| SD increase3 | 831 / 7.5 (1.9) | −0.16 (−0.31, −0.02) | −0.19 (−0.34, −0.03) | −0.17 (−0.32, −0.02) | −0.11 (−0.27, 0.04) | −0.03 (−0.17, 0.11) | −0.05 (−0.21, 0.11) |
| P 4 | 0.03 | 0.02 | 0.03 | 0.15 | 0.66 | 0.56 | |
| Attention problems score | |||||||
| SD increase3 | 835 / 4.3 (1.6) | −0.25 (−0.36, −0.13) | −0.24 (−0.36, −0.11) | −0.22 (−0.34, −0.09) | −0.18 (−0.30, −0.05) | −0.14 (−0.26, −0.02) | −0.08 (−0.21, 0.06) |
| P 4 | <0.001 | <0.001 | 0.001 | 0.01 | 0.02 | 0.27 | |
1
Adjusted for offspring age, sex, IQ, HOME score, SES, and parental malaise;
2
Based on Behaviour Problems Index;
3
Mean change per SD increase;
4
P for linear trend;
5
Based on Rutter A scale