BioMed Research International

Review Article

The Level of Vitamin D in Children and Adolescents with Nonalcoholic Fatty Liver Disease: A Meta-Analysis

Table 4

Newcastle Ottawa Scale (NOS) assessment of the quality of the case-control and cross-sectional studies.
StudySelectionComparabilityExposure Total scores
Case definition adequateRepresentativeness of the casesSelection of controlsdefinition of ControlsComparability based on design or analysisAscertainment of exposureSame method of ascertainment for cases and controlsNon-response rate
Sezer et al. [17]★★★★ ★★ 6
Mohamed et al. [26]★★★★★★★ 8
Malespin et al. [27]★★ ★★★★ 6
Chang et al. [23]★★★★ ★★ 6
Yildiz et al. [24]★★★★★★★★ 8
Black et al. [28]★★★★★★★ 7
Nobili et al. [29]★★ ★★★★ 6
Pirgon et al. [25]★★ ★★★ ★ 6