Table 1: The baseline characteristics of gallstone disease at first screening among study subjects between 2002 and 2007 (n = 1379).


Variables Number (%) or mean±SD

Categorical variables
    Sex
      Male 701 (50.8)
      Female 678 (49.2)
    Age (yrs)
      <40 421 (30.5)
      40–49 386 (28.1)
      50–59 293 (21.2)
      60–69 152 (11.0)
      ≥70 127 (9.2)
    Each state of gallstone disease
      No gallstone 1296 (94.0)
      Single stone 26 (1.9)
      Multiple stones 36 (2.8)
      Cholecystectomy 21 (1.5)
Continuous variables
   Fasting plasma glucose (mg/dl) 95.2 ± 24.0
   Body mass index (Kg/m 2) 23.6 ± 3.6
   Systolic blood pressure(mmHg) 121.3 ± 17.2
   Diastolic blood pressure(mmHg) 78.4 ± 12.8
   Total cholesterol(mg/dl) 212.4 ± 35.5
   Triglyceride (mg/dl) 133.0 ± 111.4
   Uric acid (mg/dl) 6.4 ± 3.0
   AST (U/L) 29.2 ± 17.9
   ALT (U/L) 31.5 ± 30.6
   Creatinine (mg/dl) 1.01 ± 0.33
   BUN (mg/dl) 14.2 ± 5.8