Table 1 Distribution of demographic and behavioral variables for head and neck squamous cell carcinoma cases and controls (Iran, May 2017 - July 2020).
Variable | Controls N (%) | Cases N (%) |
|---|---|---|
Total | 3477 | 899 |
Age (years) | Â | Â |
30–39 | 257 (7.4) | 61 (6.8) |
40–49 | 559 (16.1) | 142 (15.8) |
50–59 | 1070 (30.8) | 272 (30.3) |
60–69 | 1092 (31.4) | 290 (32.3) |
≥ 70 | 499 (14.3) | 134 (14.9) |
Gender | Â | Â |
Female | 1077 (31.0) | 223 (24.8) |
Male | 2400 (69.0) | 676 (75.2) |
Place of residence | Â | Â |
Non-capital city | 2167 (62.3) | 631 (70.2) |
Capital city | 1310 (37.7) | 268 (29.8) |
Province | Â | Â |
Tehran | 816 (23.5) | 162 (18.0) |
Fars | 1027 (29.5) | 379 (42.2) |
Kerman | 525 (15.1) | 158 (17.6) |
Golestan | 374 (10.7) | 40 (4.4) |
Mazandaran | 136 (3.9) | 17 (1.9) |
Kermanshah | 251 (7.2) | 37 (4.1) |
Khorasan-Razavi | 170 (4.9) | 37 (4.1) |
Hormozgan | 78 (2.2) | 33 (3.7) |
Systan-Balouchestan | 100 (2.9) | 36 (4) |
SES a | Â | Â |
Low | 974 (28.0) | 355 (39.5) |
Medium | 1174 (33.8) | 297 (33.0) |
High | 1329 (38.2) | 247 (27.5) |
Smoking status | Â | Â |
Never smoker | 1951(56.1) | 259 (28.8) |
Ever smoker of Opium /Tobacco | 1526 (43.9) | 640 (71.2) |
Total fruit consumption (g/day; mean (SD)) | 334 (254) | 307 (308) |
Total vegetable consumption (g/day; mean (SD)) | 486 (289) | 445 (352) |
