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Table 3 Calculated data extracted from the included studies to assess heterogeneity in the meta-analysis searching for an association between T. gondii and diabetes mellitus using both fixed and random effect models

From: The association between Toxoplasma gondii and type 2 diabetes mellitus: a systematic review and meta-analysis of human case-control studies

ModelEffect size and 95% intervalTest of null (two-tail)Heterogeneity
Number of studiesPoint estimateLower limitUpper limitZ valuep valueQ valuedf (Q)p valueI2 (%, 95% CI)
Fixed102.572.222.9912.40< 0.00138.5669< 0.000176.66 (56.96–87.35)
Random102.321.663.244.92< 0.001