Epidemiology of non-alcoholic fatty liver disease and non-alcoholic steatohepatitis in Japan: A focused literature review.

show a higher prevalence of obesity among patients with advanced disease (F3/F4) when compared to patients with mild fibrosis (F0–F2) (72 vs 65% and 83 vs 73%, respectively); however, these results failed to reach statistical significance. 13 , 17 Yatsuji et al . reported similar results; nevertheless, the authors only assessed statistical significance when stratifying results by age. 22 According to study results, the prevalence of obesity was 80 and 67% in patients younger and older than 55 years old, respectively ( P < 0.05), and

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