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Introduction: One of the most common forms of chronic liver disease related to lifestyle is non-alcoholic liver disease. Objectives: The present study was conducted to compare weight and waist circumference of patients with and without non-alcoholic fatty liver disease (NAFLD) referred to hospitals affiliated to Tehran University of Medical Sciences in 2017. Patients and Methods: This case-control study was carried out on 300 outpatients and inpatients patients aged between 18 to 65 years referred to the ultrasonography section of hospitals with convenience sampling method. Based on the results of ultrasonography, these subjects were divided into two groups; case (100 patients) and control group (200 subjects). Results: The mean BMI (body mass index) and waist circumferences of patients without NAFLD were 22.47 ± 1.97 kg/m2 and 83.84 ± 8.68 cm, respectively, while in the patients with fatty liver the mean BMI and waist circumference were 26.10 ± 2.21 kg/m2 and 98.83 ± 7.28 cm, respectively (P = 0.001). Conclusion: The results of the data analysis showed that the patients with fatty liver have high levels of BMI in comparison with those who had not fatty liver. Regarding the high prevalence of non-alcoholic fatty liver, lifestyle changes and the implementation of educational interventions to increase awareness are necessary.

Comparison of body mass index and waist circumference of patients with and without nonalcoholic fatty liver in Tehran