Proportional hazards regression analysis. Univariate and multivariate estimate hazards. Independent variable relative NRR was introduced as continuous
| Factor | Unadjusted estimated hazard | Unadjusted 95% CI | Adjusted estimated hazard | Adjusted 95% CI |
|---|---|---|---|---|
| Relative NRR area (%) | 0.928 | 0.79; 0.979 | 0.938 | 0.887; 0.992 |
↵p <0.05.