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Table 1 Baseline characteristics of cases and controls

From: Population attributable fraction of Esophageal squamous cell carcinoma due to smoking and alcohol in Uganda

Characteristic Control Case
n = 142, n (%) n = 67, n (%)
Male gender 75 (52.82) 53 (79.10)
Age group, years   
 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   
 Smoking 8 (5.63) 6 (8.96)
 Alcohol 22 (15.49) 6 (8.96)
 Alcohol & smoking 10 (7.04) 14 (20.90)
Presenting symptoms   
 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)
  1. Upper GI bleedinga:hematemesis and/or melena; Regurgitationb: Epigastric pain, heartburn, and/or regurgitation Othersc:vomiting, abdominal pain, and chest pain