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Table shows marginal significance of individual terms in Cox proportional hazards test for effects of predictor variables on mortality hazard rate.
| Source | χ2 | Df | P |
|---|---|---|---|
| Nicotine | 0.14 | 1 | 0.71 |
| Anabasine | 0.21 | 1 | 0.65 |
| Nicotine*Anabasine | 0.19 | 1 | 0.66 |
| Colony | 7.6 | 3 | 0.054 |
