The relationship between NAFLD and retinol-binding protein 4 - an updated systematic review and meta-analysis

Table 2 Meta-regression of the circulating RBP4 levels and NAFLD

Covariates	No. Groups	Coefficient	Standard error	t	P	95%CI
Univariate meta-regression analysis
RBP4 measurement	17	0.598	0.477	1.25	0.210	−0.337	1.533
Quality scores	17	−0.110	0.174	−0.64	0.525	−0.451	0.230
Number of females	17	0.000	0.001	0.45	0.655	−0.001	0.002
BMI	16	−0.011	0.023	−0.49	0.625	−0.057	−0.034
NAFLD diagnosis	17	−0.869	0.286	− 3.04	0.002	−1.430	−0.308
Age	16	−0.015	0.032	−0.46	0.648	−0.078	0.049
Ethnicity	17	−0.502	0.300	−1.67	0.094	−1.091	0.086
Multivariate meta-regression analysis
NAFLD diagnosis	17	−0.854	0.377	−2.27	0.024	−1.593	−0.115
Ethnicity	17	−0.028	0.337	−0.08	0.934	−0.689	0.886

CI Confidence interval, BMI Body mass index, NAFLD Non-alcoholic fatty liver disease, RBP4 Retinol-binding protein 4

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