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Table 2 Multivariate adjusted hazard ratio for death in nasopharyngeal cancer patients (n = 3605)
| Events/total (%) | Adjusted hazard ratiod | 95 % CIc | p value | |
|---|---|---|---|---|
| Wait time and duration of RTb | 0.053 | |||
| Wait time ≤ 4 weeks, duration of RT ≤ 10 weeks | 223/1946 (11.5) | 1 | ||
| Wait time > 4 weeks, duration of RT ≤ 10 weeks | 75/255 (29.4) | 1.26 | (0.95–1.67) | 0.097 |
| Wait time ≤ 4 weeks, duration of RT > 10 weeks | 177/1342 (13.2) | 1.04 | (0.85–1.27) | 0.683 |
| Wait time > 4 weeks, duration of RT > 10 weeks | 24/62 (38.7) | 1.70 | (1.10–2.60) | 0.015 |
| Hospital ownership | 0.183 | |||
| For profit | 135/1127 (12.0) | 1 | ||
| Non-profit | 273/1915 (14.3) | 1.13 | (0.91–1.40) | 0.238 |
| Public | 91/563 (16.2) | 1.28 | (0.98–1.67) | 0.069 |
| Hospital teaching level | 0.552 | |||
| Medical center | 313/2332 (13.4) | 1 | ||
| Regional | 162/1121 (14.5) | 1.11 | (0.91–1.36) | 0.278 |
| District | 24/152 (15.8) | 1.01 | (0.66–1.55) | 0.948 |
| Gender | ||||
| Male | 387/2711 (14.3) | 1 | ||
| Female | 112/894 (12.5) | 0.98 | (0.79–1.22) | 0.900 |
| Age group | <0.001 | |||
| 0–44.99 years | 108/1239 (8.7) | 1 | ||
| 45–64.99 years | 240/1916 (12.5) | 1.25 | (0.99–1.58) | 0.052 |
| More than 65 years | 151/450 (33.6) | 2.65 | (2.01–3.49) | <0.001 |
| Treatment | ||||
| CCRTa | 356/2970 (12.0) | 1 | ||
| RTb alone | 143/635 (22.5) | 1.58 | (1.26–1.98) | <0.001 |
| Charlson Comorbidity Index Score (mean = 0.3778) | ||||
| Lower than mean | 104/2597 (4.0) | 1 | ||
| Higher than mean | 395/1008 (39.2) | 15.34 | (12.26–19.18) | <0.001 |
| Urbanization | 0.598 | |||
| Urban | 138/1149 (12.0) | 1 | ||
| Suburban | 198/1508 (13.1) | 0.90 | (0.72–1.12) | 0.374 |
| Rural | 163/948 (17.2) | 0.89 | (0.70–1.13) | 0.372 |
