The Efficacy of Guanxinning Injection in Treating Angina Pectoris: Systematic Review and Meta-Analysis of Randomized Controlled Trials

Table 5

Metaregression analysis of the relationship between outcomes and the study characteristics.

log OR	Number of RCTs	Number of participants	Factor	Coefficient	z	P
SYMPTOMS	65	6064	M score	0.0663	0.4378	0.6615
			Sample size	−0.0013	−0.4955	0.6203
			Number of authors	−0.0466	−0.6283	0.5298
			Publication year	−0.0838	−1.9158	0.0554
			Trial date report	−0.1931	−0.7634	0.4453
			Baseline comparison	0.3299	1.3376	0.1810
			Adverse events	−0.0965	−0.4646	0.6422
			Follow-up period	0.0116	0.6126	0.5401
ECG	38	3704	M score	0.1191	0.7160	0.4740
			Sample size	0.0006	0.2938	0.7689
			Number of authors	−0.0100	−0.1071	0.9147
			Publication year	−0.0180	−0.4296	0.6675
			Trial date report	−0.4255	−1.5606	0.1186
			Baseline comparison	0.1520	0.4458	0.6558
			Adverse events	0.1066	0.5300	0.5961
			Follow-up period	−0.0423	−2.6000	0.0093