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Table 2 Comparison of baseline patients’ characteristics, including physical findings and symptoms, between those with perforation and those without perforation by univariate analysis

From: Evaluation of risk factors for perforated peptic ulcer

  Case subjects (those with perforation) Control subjects (those without perforation) p-value
n = 136 n = 272
Physical finding & Symptom
 Location of pain
  Abdominal pain    < 0.01
  No pain, n (%) 13 (9.6) 94 (34.6)  
  Upper abdomen, n (%) 59 (43.4) 82 (30.1)  
  Mid abdomen, n (%) 9 (6.6) 39 (14.3)  
  Lower abdomen, n (%) 11 (8.1) 47 (17.3)  
  Multiple abdomen, n (%) 44 (32.4) 10 (3.7)  
  Chest pain, n (%) 2 (1.5) 14 (5.1) 0.10
  Back pain, n (%) 15 (11.0) 22 (8.1) 0.36
Other Associated Symptoms
  Loss of appetite, n (%) 33 (24.3) 39 (14.3) 0.02
  Vomiting, n (%) 42 (30.9) 82 (30.1) 0.91
  Nausea, n (%) 51 (37.5) 81 (29.8) 0.12
  Hematemesis, n (%) 10 (7.4) 8 (2.9) 0.07
  Constipation, n (%) 11 (8.1) 16 (5.9) 0.40
  Diarrhea, n (%) 9 (6.6) 49 (18.0) < 0.01
  Hematochezia/melena, n (%) 24 (17.6) 38 (14.0) 0.38
  Dizziness, n (%) 8 (5.9) 21 (7.7) 0.55
  Perspiration, n (%) 20 (14.7) 34 (12.5) 0.54
  Pallor, n (%) 8 (5.9) 12 (4.4) 0.63
  Respiratory distress, n (%) 9 (6.6) 17 (6.3) 1.00
  Muscular defense, n (%) 93 (68.4) 25 (9.2) < 0.01
  1. Numbers in bold indicate that the p value is less than 0.05