Table 1 Patients’ demographic and clinical characteristics.
From: Neck dissection improves the prognosis of patients with early-stage oral squamous cell carcinoma
Variables | Total (n = 12,606) | Observation (n = 8342) | Neck dissection (n = 4264) | P-value |
|---|---|---|---|---|
Age, n (%) | < 0.001 | |||
< 65 years | 6003 (47.6) | 3521 (42.2) | 2482 (58.2) | |
≥ 65 years | 6603(52.4) | 4821 (57.8) | 1782 (41.8) | |
Sex, n (%) | < 0.001 | |||
Male | 7713 (61.2) | 5192 (62.2) | 2521 (59.1) | |
Female | 4893 (38.8) | 3150 (37.8) | 1743 (40.9) | |
Site, n (%) | < 0.001 | |||
Lip | 2172 (17.2) | 2043 (24.5) | 129 (3) | |
Tongue | 6803 (54.0) | 4089 (49) | 2714 (63.6) | |
Gum | 876 (6.9) | 539 (6.5) | 337 (7.9) | |
Floor of mouth | 1076 (8.5) | 547 (6.6) | 529 (12.4) | |
Palate | 530 (4.2) | 481 (5.8) | 49 (1.1) | |
Buccal mucosa | 973 (7.7) | 530 (6.4) | 443 (10.4) | |
Others | 176 (1.4) | 113 (1.4) | 63 (1.5) | |
Marital status, n (%) | 0.004 | |||
Married | 6728 (57.9) | 4320 (57) | 2408 (59.7) | |
Others | 4885 (42.1) | 3262 (43) | 1623 (40.3) | |
Race, n (%) | < 0.001 | |||
White | 10,912 (86.6) | 7362 (88.3) | ||
Black | 473 ( 3.8) | 318 (3.8) | ||
Others | 1071 ( 8.5) | 550 (6.6) | ||
Residence, n (%) | < 0.001 | |||
Urban | 10,745 (85.3) | 7035 (84.4) | 3710 (87.1) | |
Rural | 1850 (14.7) | 1301 (15.6) | 549 (12.9) | |
Income, n (%) | < 0.001 | |||
< 50,000 | 972 ( 7.7) | 662 (7.9) | 310 (7.3) | |
50,000–75,000 | 4660 (37.0) | 3226 (38.7) | 1434 (33.6) | |
> 75,000 | 6973 (55.3) | 4453 (53.4) | 2520 (59.1) | |
Grade, n (%) | < 0.001 | |||
I | 3620 (32.0) | 2598 (36.2) | 1022 (24.8) | |
II | 5594 (49.4) | 3171 (44.1) | 2423 (58.7) | |
III | 1591 (14.1) | 995 (13.9) | 596 (14.4) | |
Radiation, n (%) | 0.031 | |||
No/Unknown | 9234 (73.3) | 6060 (72.6) | 3174 (74.4) | |
Yes | 3372 (26.7) | 2282 (27.4) | 1090 (25.6) | |
Chemotherapy, n (%) | < 0.001 | |||
No/Unknown | 11,303 (89.7) | 7295 (87.4) | 4008 (94) | |
Yes | 1303 (10.3) | 1047 (12.6) | 256 (6) | |
Survival months | 36.0 (15.0, 75.0) | 37.0 (15.0, 75.0) | 34.0 (15.0, 77.0) | 0.137 |
DSS, n (%) | < 0.001 | |||
Alive or dead of other cause | 10,129 (80.4) | 6614 (79.3) | 3515 (82.4) | |
Dead(attributable to the cancer) | 2477 (19.6) | 1728 (20.7) | 749 (17.6) | |
OS, n (%) | < 0.001 | |||
Alive | 7471 (59.3) | 4616 (55.3) | 2855 (67) | |
Dead | 5135 (40.7) | 3726 (44.7) | 1409 (33) |
