Gestational age | Controls | Cases | OR | 95%CI | P value | |
---|---|---|---|---|---|---|
Lower | Upper | |||||
For the analysis of CNS tumor risk | Â | |||||
  < 37 weeks | 54 | 9 | 1.5 | 0.6 | 3.9 | 0.405 |
 37–39 weeks | 331 | 38 | 1 | Reference |  | |
 40–41 weeks | 366 | 20 | 0.3 | 0.2 | 0.6 | <0.001 |
  > 41 weeks | 71 | 5 | 0.4 | 0.1 | 1.0 | 0.048 |
 |  |  |  |  |  | P for trend = 0.001 |
For the analysis of Leukemia risk | ||||||
  < 37 weeks | 54 | 6 | 0.9 | 0.3 | 2.4 | 0.842 |
 37–39 weeks | 331 | 51 | 1 | Reference |  |  |
 40–41 weeks | 366 | 52 | 0.7 | 0.5 | 1.2 | 0.175 |
  > 41 weeks | 71 | 15 | 1.2 | 0.6 | 2.3 | 0.659 |
 |  |  |  |  |  | P for trend = 0.930 |