Table 1 Characteristics of 1008 patients with SCCOP.
Variable | No. of patients (%) | No. of patients with recurrence | 5-year recurrence rate (%) | P* value |
|---|---|---|---|---|
No. of patients | 1008 (100) | 181 | 20 | Â |
Age, years | ||||
 ≤57 | 621 (61.6) | 85 | 15 | <0.0001 |
 >57 | 387 (38.4) | 96 | 27 |  |
Sex | ||||
 Male | 872 (86.5) | 161 | 20 | 0.3110 |
 Female | 136 (13.5) | 20 | 19 |  |
Ethnicity | ||||
 Non-Hispanic white | 913 (90.6) | 146 | 17 | <0.0001 |
 Other | 95 (9.4) | 35 | 41 |  |
Smoking | ||||
 Never | 388 (38.5) | 51 | 14 | 0.0004 |
 Ever | 620 (61.5) | 130 | 23 |  |
Alcohol use | ||||
 Never | 247 (24.5) | 26 | 10 | 0.0005 |
 Ever | 761 (75.5) | 155 | 23 |  |
Comorbidity | ||||
 None or mild | 913 (90.6) | 157 | 19 | 0.0370 |
 Moderate to severe | 95 (9.4) | 24 | 27 |  |
Index cancer stage | ||||
 1 or 2 | 72 (7.1) | 11 | 19 | 0.5280 |
 3 or 4 | 936 (92.9) | 170 | 20 |  |
Treatment | ||||
 X/XC/XS/S | 947 (93.9) | 166 | 19 | 0.0030 |
 SXC | 61 (6.1) | 15 | 32 |  |
