Table 2.

Possible source of the heterogeneity of mobile phone bacterial contamination among HCWs based on univariate meta-regression

Variable	Coefficient	p value	95% CI
Year of publication	3.47	< 0.001	2.48, 4.46
Sample size	− 0.035	< 0.001	− 0.054, -0.016
Sub-region	0.465	0.581	− 2.73, 3.67
Culture media	− 2.28	0.414	− 7.74, 3.19
Quality score	1.98	0.622	− 8.48, 12.28