A meta-analysis on the prevalence, associated factors and diagnostic methods of mental stress induced myocardial ischemia

Table 5 Univariate and multivariate meta-regression analyses of potential sources of heterogeneity

Heterogeneity Factors	exp(b)	SE	t	P	95% CI	tau²	I-squared_res	Adj R-squared
Univariate
Publication year	0.9977	0.0038	− 0.61	0.549	0.9896, 1.0058	0.0216	93.69%	− 4.07%
Sample size	0.9996	0.0002	− 1.29	0.215	0.9992, 1.0002	0.0200	92.70%	3.56%
Country	0.9433	0.0815	− 0.68	0.508	0.7867, 1.1311	0.0214	94.23%	− 3.41%
Mental stress	1.0508	0.0201	2.59	0.018	1.0094, 1.0938	0.0151	88.73%	26.96%
Diagnostic techniques	1.0395	0.0200	2.01	0.060	0.9983, 1.0825	0.017	89.82%	17.71%
Diagnostic measurements	1.0187	0.0282	0.67	0.512	0.9611, 1.0797	0.0212	93.95%	− 2.46%
Multivariate						0.0151	87.62%	26.97%
Mental stress	1.0433	0.0260	1.70	0.108	0.9896, 1.0999
Diagnostic techniques	1.0145	0.0239	0.61	0.551	0.9650, 1.0665
Diagnostic measurements	1.0263	0.0250	1.07	0.302	0.9747, 1.0807

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