Table 2. Frequency of risk factors responsible for cholelithiasis.

BMI: body mass index, ERCP: endoscopic retrograde cholangiopancreatography, OCP: oral contraceptive pill. Data has been presented as N (number) and % (percentage); a p-value of <0.05 is considered statistically significant.

Risk factor	N	Percentage (%)
Obesity (BMI ≥ 30)	89	44.5%
History of pancreatitis	33	16.5%
Family history of gallstones	78	39.4%
OCP use	39	19.7%
ERCP investigation	15	7.5%
Metabolic syndrome	61	30.8%
Alcohol intake	42	21.2%
Diabetes mellitus	71	35.9%
Chronic liver disease	37	18.5%
Hypertension	92	46.5%
Smoking (tobacco)	53	26.8%
History of pregnancy	42	21.2%
Cystic fibrosis/Crohn’s disease	18	9%