Table 1 Baseline characteristics of cases and controls
Characteristic | Control | Case |
|---|---|---|
n = 142, n (%) | n = 67, n (%) | |
Male gender | 75 (52.82) | 53 (79.10) |
Age group, years | Â | Â |
 31–40 | 29 (20.42) | 2 (2.99) |
 41–50 | 28 (19.72) | 19 (28.36) |
 51–60 | 32 (22.54) | 16 (23.88) |
 61–70 | 27 (19.01) | 16 (23.88) |
 >70 | 22 (15.49) | 11 (16.42) |
 Missing | 4 (2.82) | 3 (4.48) |
Substance abuse | Â | Â |
 Smoking | 8 (5.63) | 6 (8.96) |
 Alcohol | 22 (15.49) | 6 (8.96) |
 Alcohol & smoking | 10 (7.04) | 14 (20.90) |
Presenting symptoms | Â | Â |
 Dyspepsia | 77 (54.23) | _ |
 Dysphagia | 14 (9.86) | 38 (56.72) |
 Dysphagia & weightloss | 4 (2.82) | 6 (8.96) |
 Regurgitationb | 8 (5.63) | 1 (1.49) |
 Odynophagia | 4 (2.82) | 8 (11.94) |
 Upper GI bleedinga | 16 (11.27) | _ |
 Othersc | 18 (12.68) | 6 (8.96) |
 Dysphagia & Odynophagia | 1 (0.70) | 8 (11.94) |
HIV positive | 2 (1.41) | 2 (2.99) |