Table 2.

Result of meta-regression analysis with covariate of route of administration, intake and duration with HOMA-IR.

Covariate	Coefficient	SE	95% CI	p value	R2
Route of administration: oral	− 0.5992	0.7533	2.0756–0.8772	0.4263	0.98
Intake: daily	1.0958	0.4189	0.2747–1.9169	0.0089
Duration: ≥ 12 weeks	0.6443	0.4117	0.1627–1.4513	0.1176

SE Standard error of coefficient, CI Confidence interval, R² R Square.