| age | df | Deviance | Res. s.d. | Dev. dif. | P(*) | Powers |
| omitted | 0 | 427.539 | 0.497 | 108.090 | 0.000 | |
| linear | 1 | 337.561 | 0.428 | 18.113 | 0.000 | 1 |
| m = 1 | 2 | 327.436 | 0.421 | 7.987 | 0.020 | 0 |
| m = 2 | 4 | 319.448 | 0.416 | 0.000 | -- | −2 2 |
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