Table 2.
Information comparison between NPC survivors and matched group
| NPC survivor (n=83) | Matched group (n=166) | p-value | |
|---|---|---|---|
| Age (yr) | |||
| ≥ 60 | 46 | 88 | 0.719 |
| < 60 | 37 | 78 | |
| Sex | |||
| Male | 67 | 134 | > 0.99 |
| Female | 16 | 32 | |
| Drinker | |||
| Yes | 8 | 25 | 0.234 |
| No | 75 | 141 | |
| Smoker | |||
| Yes | 11 | 22 | > 0.99 |
| No | 72 | 144 | |
| Tumor site | |||
| Tongue | 54 | 108 | > 0.99 |
| Mouth floor | 6 | 12 | |
| Buccal | 13 | 26 | |
| Lower gingiva | 10 | 20 | |
| Tumor stage | |||
| T1+T2 | 59 | 118 | > 0.99 |
| T3+T4 | 24 | 48 | |
| Disease stage | |||
| Ⅰ+Ⅱ | 51 | 102 | > 0.99 |
| Ⅲ+Ⅳ | 32 | 64 | |
| Node stage | |||
| N0 | 55 | 110 | > 0.99 |
| N+ | 28 | 56 | |
| Differentiation | |||
| Well | 47 | 92 | 0.891 |
| Moderate | 23 | 44 | |
| Poor | 13 | 30 | |
| Perineural invasion | |||
| Positive | 23 | 46 | > 0.99 |
| Negative | 60 | 120 | |
| Lymphovascular invasion | |||
| Positive | 16 | 32 | > 0.99 |
| Negative | 67 | 134 | |
| Treatment | |||
| S | 15 | 22 | 0.601 |
| S+R | 30 | 64 | |
| S+R+C | 38 | 80 |
NPC, nasopharyngeal carcinoma; S, surgery; R, radiotherapy; C, chemotherapy.