| N | OR | 95% CI | P |
---|---|---|---|---|
IQ | 265 | 0.95 | 0.92-0.97 | < 0.001 |
Education level: | 275 | Â | Â | 0.009 |
None | Â | 1.00 | Â | Â |
O level | Â | 0.67 | 0.33-1.38 | Â |
A level | Â | 0.35 | 0.13-0.95 | Â |
University | Â | 0.14 | 0.03-0.65 | Â |
Housing conditions: | 294 | Â | Â | 0.68 |
No problems | Â | 1.00 | Â | Â |
1-4 problems | Â | 1.15 | 0.61-2.16 | Â |
Adverse events: | 268 | Â | Â | 0.72 |
None | Â | 1.00 | Â | Â |
Some (1-5) | Â | 1.13 | 0.57-2.24 | Â |
Height (cm) | 219 | 0.97 | 0.93-1.01 | 0.18 |
Sex: | 294 | Â | Â | 0.12 |
Male | Â | 1.00 | Â | Â |
Female | Â | 1.67 | 0.87-3.18 | Â |