Table 1.
Nested comparisons of accelerated failure time models to test for interaction effects. (n = 283. −2LL, −2 log likelihood of model; χ2, model chi-square; d.f., model degrees of freedom; Δχ2 and Δd.f., chi-square and degrees of freedom difference between the baseline and comparison models; p-value, significance of Δχ2 with Δd.f; AIC, Akaike's information criterion.)
| model | −2LL | χ2 | d.f. | Δχ2 | Δd.f. | p-value | AIC |
|---|---|---|---|---|---|---|---|
| baseline | 2418.2 | 65.78 | 10 | 2438.2 | |||
| add sex × personality | 2413.8 | 70.22 | 14 | 4.44 | 4 | 0.350 | 2441.8 |
| add age × personality | 2415.6 | 68.36 | 14 | 2.58 | 4 | 0.630 | 2443.6 |
| add background × personality | 2413.6 | 70.38 | 18 | 4.60 | 8 | 0.799 | 2449.6 |
| add transfers × personality | 2415.0 | 69.05 | 18 | 3.27 | 8 | 0.916 | 2451.0 |