Copyright ©The Author(s) 2018.
World J Hepatol. Jan 27, 2018; 10(1): 142-154
Published online Jan 27, 2018. doi: 10.4254/wjh.v10.i1.142
Table 2 Inclusion and exclusion criteria of studies on vitamin D in non-alcoholic fatty liver disease
Inclusion criteria
Patients ≥ 18 yr
Studies that evaluated vitamin D in NAFLD
Studies that evaluated the liver fibrosis stage, only based on liver biopsy
Studies that reported serum or plasma 25(OH)D levels
Exclusion criteria
Age < 18 yr
Liver diseases other than NAFLD
Studies that used non-invasive methods to evaluate liver fibrosis
Studies with inadequate data