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Table 4 Comparison of baseline patients’ characteristics, including vital signs and laboratory data, 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
Vital signs
 Systolic blood pressure (SD) 130.4 (24.0) 133.5 (28.2) 0.39
 Diastolic blood pressure (SD) 74.1 (18.5) 74.3 (16.4) 0.94
Respiratory rate (SD) 20.2 (6.1) 18.2 (5.2) 0.01
 Heart rate (SD) 81.2 (15.8) 80.7 (16.3) 0.82
 Body temperature (SD) 36.6 (0.91) 36.7 (0.97) 0.27
Laboratory data (SD)
White blood cell count (SD) 10.7 (6.5) 9.2 (5.1) 0.01
Hemoglobin (SD) 12.4 (4.8) 13.5 (3.2) 0.02
Platelet count (SD) 220.0 (130.0) 175.5 (101.1) < 0.01
Total protein (SD) 6.8 (1.0) 7.1 (0.8) 0.02
Albumin (SD) 3.8 (0.9) 4.0 (0.7) 0.04
 Blood urea nitrogen (SD) 19.7 (15.0) 17.1 (13.1) 0.10
 Creatinine (SD) 1.0 (0.9) 1.0 (1.2) 0.81
 Total bilirubin (SD) 0.8 (0.5) 1.0 (1.2) 0.06
AST (SD) 23.6 (25.1) 47.1 (114.3) < 0.01
ALT (SD) 21.2 (18.5) 40.2 (76.8) < 0.01
 Sodium (SD) 112.7 (50.9) 121.3 (43.8) 0.11
 Potassium (SD) 3.9 (0.5) 4.0 (0.5) 0.33
 Chlorine (SD) 27.5 (30.3) 25.3 (30.0) 0.50
 C-reactive protein (SD) 4.0 (8.2) 3.2 (5.0) 0.32
 APTT (SD) 25.9 (7.5) 26.7 (9.2) 0.39
 PT (SD) 8.8 (5.4) 10.0 (6.5) 0.11
  1. Numbers in bold indicate that the p value is less than 0.05