Table 3.
Odds ratios for questionnaire response by cognition scores with adjustment for other early life factors and cognition at different ages
| Cognition at 7 | Cognition at 9 | Cognition at 11 | ||||
| OR† | (95% CI) | OR† | (95% CI) | OR† | (95% CI) | |
| Adjusted for | ||||||
| Sex | 1.42 | (1.36 to 1.49) | 1.50 | (1.43 to 1.57) | 1.55 | (1.47 to 1.62) |
| Sex, Marital status at birth | 1.42 | (1.35 to 1.48) | 1.49 | (1.42 to 1.56) | 1.54 | (1.47 to 1.62) |
| Sex, Father's occupation at birth & in 1962, Number of children | 1.34 | (1.27 to 1.41) | 1.42 | (1.35 to 1.49) | 1.48 | (1.40 to 1.56) |
| Sex, Height & Weight at 1st medical exam | 1.40 | (1.34 to 1.47) | 1.48 | (1.41 to 1.55) | 1.53 | (1.46 to 1.61) |
| Sex, Rutter B behavioral score | 1.36 | (1.29 to 1.42) | 1.43 | (1.36 to 1.51) | 1.50 | (1.42 to 1.58) |
| Sex, All early life factors‡ | 1.29 | (1.22 to 1.36) | 1.37 | (1.30 to 1.45) | 1.43 | (1.36 to 1.52) |
| Sex, Cognition at 7 | - | 1.36 | (1.27 to 1.46) | 1.46 | (1.37 to 1.57) | |
| Sex, Cognition at 9 | 1.14 | (1.06 to 1.22) | - | 1.44 | (1.30 to 1.59) | |
| Sex, Cognition at 11 | 1.08 | (1.01 to 1.15) | 1.09 | (0.98 to 1.20) | - | |
* Due to missing data for some variables, this analysis was restricted to a subset of 8,452 subjects.
† Odds ratio for one standardized deviation increase in each cognition score using logistic regression.
‡ Adjusted for all early life variables (marital status at birth, father's occupation at birth & in 1962, number of children, height & weight at 1st medical exam, and Rutter B behavioural score)