Table 1.
Demographic and clinical characteristics of the original and final samples.
| Variables | Original sample (N = 721) mean ± SD or N (%) |
Final sample (N = 684) mean ± SD or N (%) |
|---|---|---|
| Demographic characteristics | ||
| Age (years) | 55.78 ± 8.84 | 55.70 ± 8.84 |
| Gender | ||
| Male | 597 (83) | 564 (83) |
| Female | 124 (17) | 120 (17) |
| Racea | ||
| White | 589 (82) | 558 (82) |
| Non-White | 130 (18) | 124 (18) |
| Educationa | ||
| ≤12 years | 400 (63) | 379 (63) |
| >12 years | 231 (37) | 222 (37) |
| Marital statusa,b | ||
| Married | 380 (56) | 361 (56) |
| Unmarried | 296 (44) | 283 (44) |
| History of tobacco usea | ||
| No | 113 (18) | 110 (18) |
| Yes | 525 (82) | 500 (82) |
| Clinical characteristics | ||
| Radiation dose (Gy) | 69.88 ± 8.43 | 71.24 ± 1.43 |
| Treatment | ||
| SFRT + cisplatin | 361 (50) | 349 (51) |
| AFRT + cisplatin | 360 (50) | 335 (49) |
| Primary cancer site | ||
| Non-larynx | 533 (74) | 508 (74) |
| Larynx | 188 (26) | 176 (26) |
| Stage | ||
| III | 158 (22) | 149 (22) |
| IV | 563 (78) | 535 (78) |
| Tube feeding | ||
| No | 553 (77) | 531 (77) |
| Yes | 168 (23) | 153 (23) |
SD = standard deviation, SFRT = standard fractionation radiotherapy, AFRT = Accelerated fractionation radiotherapy. Statistically significant differences are high-lighted in bold text.
a
Having missing cases: Race (original sample: 2; final sample: 2); Education (original sample: 90; final sample: 83); Marital status (original sample: 45; final sample: 40); History of tobacco use (original sample: 83; final sample: 74).
b
Married includes patients married or living as married; Unmarried includes patients single, separated, divorced, or widowed.