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Table 3 Characteristics of the gastrointestinal event attributable to use of non-steroidal anti-inflammatory drugs

From: Proton-pump inhibitors are associated with a reduced risk for bleeding and perforated gastroduodenal ulcers attributable to non-steroidal anti-inflammatory drugs: a nested case-control study

Characteristic Number (percentage)
Clinical presentation  
   Melaena 65 (62.5)
   Haematemesis 28 (26.9)
   Perforation 12 (11.5)
   Stomach pain 21 (20.2)
   Collapse 16 (15.4)
   No previous stomach complaints 57 (54.8)
Ulcer location  
   Gastric 53 (51.0)
   Duodenal 34 (32.7)
   Both gastric and duodenal 11 (10.6)
   No diagnostic procedure performed 6 (5.7)
   Ulcer perforation 14 (13.5)
Helicobacter pylori  
   Positive 21 (20.2)
   Negative 45 (43.3)
   Not tested 38 (36.5)
  1. The total number of patients was 104.