| Univariate Poisson regression | Multivariate Poisson regression | ||
---|---|---|---|---|
Potential Predictor | Odds Ratio (95% CI) | P | Odds Ratio (95% CI) | P |
Age (odds ratio per year) | 0.52 (0.49 to 0.54) | < 0.001 | 0.58 (0.55 to 0.62) | < 0.001 |
Gender | 0.53 (0.26 to 1.10) | 0.090 | 0.81 (0.67 to 0.99) | 0.039 |
Diagnostic group (reference: CNS tumor) | Â | Â | Â | Â |
   Leukemia | 33.7 (16.6 to 68.4) | < 0.001 | 18.6 (9.1 to 38.2) | < 0.001 |
   Solid tumor | 36.8 (18.2 to 85.9) | < 0.001 | 17.0 (8.1 to 35.7) | < 0.001 |
Site of irradiation (head vs. others) | 0.83 (0.68 to 1.00) | 0.049 | 1.35 (1.04 to 1.77) | 0.027 |
Positioning (head vs. others) | 6.97 (4.58 to 10.60) | < 0.001 | - | NS |
Psychoeducational support | 0.37 (0.29 to 0.47) | < 0.001 | 0.74 (0.57 to 0.95) | 0.018 |
Time of irradiation (odds ratio per year) | 0.91 (0.89 to 0.93) | < 0.001 | - | NS |