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Table 2 Comparison of aetiological factors between mixed cholesterol GS and black pigment GS groups

From: Can the type of gallstones be predicted with known possible risk factors?: a comparison between mixed cholesterol and black pigment stones

Aetiological factor Mixed cholesterol group (n = 38) Black pigment group (n = 48) P value
Family history of GS disease (n, %)    
  Positive 05 (13) 01 (02) 0.083γ
  Negative 33 (87) 47 (98)
Body Mass Index (n, %)    
  <25 kg/m2 12 (32) 27 (56) 0.018ψ
  >25 kg/m2 26 (68) 21 (44)
Body Mass Index (n, %)    
  <23 kg/m2 07 (18) 14 (29) 0.224ψ
  >23 kg/m2 32 (82) 34 (71)
Exogenous oestrogen in females (n, %) 12 (36) 09 (27) 0.173ψ
  Positive    
  Negative 21 (64) 24 (83)  
Parity (Mean, SD) 2.97 (1.59) 2.79 (1.58) 0.649*
Smoking in males (n, %)    
  Positive 04 (80) 08 (53) 0.603γ
  Negative 01 (20) 07 (47)
Alcohol consumption in males (n, %)    1.000γ
  Positive 04 (80) 12 (80)
  Negative 01 (20) 03 (20)
Dyslipidaemia (n, %)    0.651γ
  Positive 03 (08) 02 (04)
  Negative 35 (92) 46 (96)
Serum total cholesterol (mg/dl) 169.67 ± 25.90 171.47 ± 27.17 0.790*
Serum triglycerides (mg/dl) 153.74 ± 19.02 145.20 ± 26.74 0.153*
Serum HDL-cholesterol (mg/dl) 54.11 ± 9.36 51.18 ± 8.89 0.211*
Serum LDL-cholesterol (mg/dl) 85.96 ± 33.55 85.84 ± 26.62 0.988*
Fasting Blood Glucose (mg/dl) 98.80 ± 19.26 98.01 ± 15.71 0.854*
Type II Diabetes Mellitus (n, %)    0.035γ
  Positive 04 (11) 15 (31)
  Negative 34 (89) 33 (69)
Chronic haemolytic anaemia    -
  Positive 00 (00) 01 (02)
  Negative 38 (100) 47 (98)
Chronic liver disease    -
  Positive 00 (00) 04 (08)
  Negative 38 (100) 47 (92)
  1. γFisher’s exact test.
  2. ψChi Square test.
  3. *Two sample t test.