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 |