Systematic Reviews
Copyright ©The Author(s) 2017.
World J Hepatol. Feb 18, 2017; 9(5): 278-287
Published online Feb 18, 2017. doi: 10.4254/wjh.v9.i5.278
Table 2 Selection criteria for inclusion and exclusion
Inclusion criteria
Age ≥ 18 yr
Studies including mono-infected HCV or co-infected HCV/HIV
Studies that evaluated liver fibrosis stage, only based on liver histology
Studies that reported serum or plasma 25(OH)D levels
Exclusion criteria
Age < 18 yr
Other etiologies of liver disease, other than hepatitis C
Studies that used non-invasive methods in evaluating liver fibrosis
Inadequate data