Table 1.
Baseline characteristics of the 987 incident head and neck cancer patients.
| Characteristics | No Esophageal Neoplasm (n = 836) |
Esophageal Low Grade Dysplasia (n = 88) |
Esophageal High Grade Dysplasia/SCC (n = 63) |
p Value |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | ||
| Age (years) | 0.019 | |||
| <50 | 279 (33.4) | 20 (22.7) | 28 (44.4) | |
| ≥50 | 557 (66.6) | 68 (77.3) | 35 (55.6) | |
| Gender (Male) | 836 (100) | 88 (100) | 63 (100) | |
| Smoking | 0.013 | |||
| Non-smoker | 109 (13.0) | 7 (8.0) | 1 (1.6) | |
| Smoker | 727 (87.0) | 81 (92.0) | 62 (98.4) | |
| Alcohol drinking | <0.001 | |||
| Non-drinker | 233 (27.9) | 10 (11.6) | 1 (1.6) | |
| Drinker | 603 (72.1) | 78 (88.6) | 62 (98.4) | |
| Betel nut | 0.953 | |||
| Non-chewer | 184 (22.0) | 22 (25.0) | 13 (20.6) | |
| Chewer | 651 (77.9) | 66 (75.0) | 50 (79.1) | |
| Tea drinking | 0.025 | |||
| Non-consumer | 562 (67.2) | 53 (60.2) | 51 (81.0) | |
| Consumer | 274 (32.8) | 35 (39.8) | 12 (19.0) | |
| Cancer Stage | 0.029 | |||
| 0–I | 136 (16.3) | 14 (15.9) | 3 (4.8) | |
| II | 117 (14.0) | 15 (17.0) | 6 (9.5) | |
| III | 154 (18.4) | 8 (9.1) | 11 (17.5) | |
| IV | 429 (51.3) | 51 (58.0) | 43 (68.3) | |
| Location of index cancer | <0.001 | |||
| Oral cavity | 623 (74.5) | 55 (62.5) | 17 (27.0) | |
| Oropharynx | 117 (14.0) | 19 (21.6) | 15 (23.8) | |
| Hypopharynx | 68 (8.1) | 13 (14.8) | 26 (41.3) | |
| Larynx | 28 (3.3) | 1 (1.1) | 5 (7.9) |
Abbreviations: SCC, squamous cell carcinoma. p value was tested with Chi-square test.