Circulating retinol binding protein 4 levels in coronary artery disease: a systematic review and meta-analysis

Table 2 Meta-regression analysis to assess the influence of basal variables on the effect sizes

Variables	β	95% CI	P	R²
The percentage of females	0.41	−0.46, 1.28	0.33	0.11
Mean age	0.10	−0.27, 0.47	0.56	0.01
Mean BMI	0.44	0.09, 0.79	0.03	0.11
Region	−0.39	−1.05, 0.28	0.23	0.12
Quality score	−0.13	−0.74, 0.47	0.65	0.01
Complications status	1.14	0.30, 1.99	0.01	0.24

ISSN: 1476-511X