Table 6.
Survival Analyses of Likelihood of Relapse: Interaction Model with Adjusted a Hazard Ratios (n = 146)
| Hazard Ratio | 95% CIb | χ2 | P value | |
|---|---|---|---|---|
| Diet | ||||
| High-vegetable | 1.00 | |||
| Mixed | 1.04 | 0.62–1.75 | 0.03 | 0.873 |
| High-fat | 0.85 | 0.48–1.50 | 0.31 | 0.579 |
| Baseline depression | ||||
| Non-depressed (CESD≤15) | 1.00 | |||
| Depressed (CESD>15)c | 0.72 | 0.38–1.37 | 1.01 | 0.314 |
| Interaction: Diet × Depression | ||||
| High-veg. diet × Non-depressed | 1.00 | |||
| Mixed diet × Depressed | 1.37 | 0.61–3.07 | 0.58 | 0.447 |
| High-fat diet × Depressed | 3.02 | 1.20–7.57 | 5.52 | 0.019 |
a adjusted for nicotine dependence, longest quit attempt, self-efficacy, education
b CI = Confidence Interval
c CESD = Center for Epidemiological Studies-Depression