Table 4. Model comparison and parameter estimates with 90% CI for the linear and non-linear models for all leukemia and leukemia subtypes in relation to external exposure.
| All leukemias combined | Leukemia excluding CLL | Acute myeloid leukemia | Chronic myeloid leukemia | ||
|---|---|---|---|---|---|
| Linear model | |||||
| Linear effect | 1.89 (0.89; 3.74) | 3.46 (1.57; 7.65) | 13.60 (4.45; 50.79) | 1.83 (0.13; 8.88) | |
| Deviance change* (P-value) | 1.67(p = 0.20) | 2.54(p = 0.11) | 3.59(p = 0.06) | 0.06(p > 0.5) | |
| Quadratic model | |||||
| Quadratic term | 0.82 (0.40; 1.48) | 1.53 (0.75; 2.92) | 7.56 (2.69; 23.3) | 0.98 (0.08; 3.64) | |
| Deviance change* (P-value) | 0.30 (p>0.5) | 0.26 (p>0.5) | 0.19 (p>0.5) | 0.07 (p>0.5) | |
| Linear-quadratic model | |||||
| Linear term | 0.53 (-0.84; 2.89) | 0.75 (-1.25; 4.76) | 2.09 (-4.24; 22.58) | 0.91 (-3.38; 6.46) | |
| Quadratic term | 0.63 (-0.19; 1.46) | 1.29 (-0.05; 2.83) | 7.04 (0.95; 23.64) | 0.53(-1.45; 3.78) | |
*difference in deviance relative to the linear-quadratic model