Table 1. Patient Characteristics.
| Number of patients | % | |
|---|---|---|
| Patients’ characteristics | ||
| Age, mean(±SD) | 51±13 | |
| Gender, male (%) | 3080 | (75.2) |
| Treatment | ||
| RT‡ alone | 1018 | (24.9) |
| RT‡+ CT+ | 3077 | (75.1) |
| CCI | ||
| 0 | 1625 | (39.7) |
| 1–5 | 802 | (19.6) |
| More than 6 | 1668 | (40.7) |
| ACCI | ||
| 0 | 1661 | (40.6) |
| 2–3 | 1357 | (33.1) |
| More than 4 | 1077 | (26.3) |
| HN-CCI | ||
| 0 | 3057 | (74.7) |
| More than 1 | 1038 | (25.3) |
| Socioeconomic status | ||
| Low SES | 1306 | (31.9) |
| Moderate SES | 1258 | (30.7) |
| High SES | 1531 | (37.4) |
| Geographic Region | ||
| Northern (n = 1745) | 2071 | (50.6) |
| Central (n = 502) | 632 | (15.4) |
| Southern (n = 946) | 1259 | (30.7) |
| Eastern (n = 95) | 133 | (3.2) |
Abbreviations: nasopharyngeal carcinoma, NPC;+CT, chemotherapy; ‡RT, Radiation therapy; SD, standard deviation; CCI, Charlson Comorbidity Index; ACCI, Age-Adjusted Charlson Comorbidity Index; HN-CCI, revised head and neck Charlson Comorbidity Index
Demographic characteristics for NPC patients from 2007 to 2011 (n = 4095).