Table 1.
Baseline clinicopathological characteristics of patients.
| Characteristics | Total | Married | Widowed | Single | Divorced/separated | P value |
|---|---|---|---|---|---|---|
| N = 8834 | N = 4817 | N = 894 | N = 1732 | N = 1391 | ||
| Sex | < 0.001 | |||||
| Male(%) | 7166 | 4151 (86.2) | 494(55.3) | 1417(81.8) | 1104 (79.4) | |
| Female(%) | 1668 | 666 (13.8) | 400 (44.7) | 315(18.2) | 287 (20.6) | |
| Age | < 0.001 | |||||
| < 65(%) | 5005 | 2580 (53.6) | 201(22.5) | 1298(74.9) | 926 (66.6) | |
| ≥ 65(%) | 3829 | 2237 (46.4) | 693(77.5) | 434(25.1) | 465 (33.4) | |
| Race | < 0.001 | |||||
| White(%) | 7132 | 4103 (85.2) | 717(80.2) | 1176(67.9) | 1136(81.7) | |
| Black(%) | 1378 | 474 (9.8) | 153(17.1) | 521(30.1) | 230(16.5) | |
| Other1(%) | 324 | 240 (5.0) | 24(2.7) | 35(2.1) | 25(1.8) | |
| Grade | < 0.001 | |||||
| Grade I(%) | 1490 | 911 (18.9) | 120(13.4) | 247(14.3) | 212(15.2) | |
| Grade II(%) | 5155 | 2827 (58.7) | 524(58.6) | 1025(59.2) | 779(56.0) | |
| Grade III/ Grade IV(%) | 2189 | 1079 (22.4) | 250(28.0) | 460(26.5) | 400(28.8) | |
| Histological type | 0.95 | |||||
| Squamous cell carcinoma(%) | 8563 | 4669 (96.9) | 869(97.2) | 1679(96.9) | 1346(96.8) | |
| Other2(%) | 271 | 148 (3.1) | 25(2.8) | 53(3.1) | 45(3.2) | |
| Surgery | < 0.001 | |||||
| No (%) | 5345 | 2816 (58.5) | 599(67.0) | 1055(60.9) | 875(62.9) | |
| Yes (%) | 3489 | 2001 (41.5) | 295(33.0) | 677(39.1) | 516(37.1) | |
| AJCC stage | < 0.001 | |||||
| I (%) | 2885 | 1906 (39.6) | 249(27.9) | 394(22.7) | 336(24.2) | |
| II (%) | 1497 | 861(17.9) | 178(19.9) | 232(13.4) | 226(16.2) | |
| III (%) | 1657 | 832 (17.3) | 189(21.1) | 343(19.8) | 293(21.0) | |
| IV (%) | 2795 | 1218 (25.2) | 278(31.1) | 763(44.1) | 536(38.5) | |
| Radiotherapy | < 0.001 | |||||
| Yes (%) | 2566 | 1474 (30.6) | 213(23.8) | 494(28.5) | 385(27.7) | |
| No/unknown (%) | 6268 | 3343(69.4) | 681(76.2) | 1238(71.5) | 1006(72.3) | |
| Chemotherapy | < 0.001 | |||||
| Yes (%) | 3196 | 1562 (32.4) | 279(31.2) | 747(43.1) | 608(43.7) | |
| No/unknown (%) | 5638 | 3255(67.6) | 615(68.8) | 985(56.9) | 783(56.3) |
Other1 (Asian or Pacific Islander, American Indian/Alaska Native).
Other2 (Neoplasm, malignant; Carcinoma, NOS; Carcinoma, undifferentiated, NOS; Large cell carcinoma, NOS; Large cell neuroendocrine carcinoma; Spindle cell carcinoma, NOS; Pseudosarcomatous carcinoma; Carcinoma, anaplastic, NOS; Non-small cell carcinoma; Small cell carcinoma, NOS; Papillary squamous cell carcinoma; Verrucous carcinoma, NOS; Combined small cell carcinoma; Papillary carcinoma, NOS; Basaloid squamous cell carcinoma; Lymphoepithelial carcinoma; Basaloid carcinoma; Adenocarcinoma, NOS; Scirrhous adenocarcinoma; Adenoid cystic carcinoma; Neuroendocrine carcinoma, NOS; Mucoepidermoid carcinoma; Papillary carcinoma, follicular variant; Adenosquamous carcinoma; Adenocarcinoma with cartilaginous and osseous metaplasia; Adenocarcinoma with neuroendocrine differentiation; Carcinoma in pleomorphic adenoma).