Table 2 Results of heterogeneity among included studies
Variables | # of studies | Q value | I2 (%) | P value | Selected model |
|---|---|---|---|---|---|
Hepatitis B vaccination status (Incomplete vs. complete) | 4 | 9.9 | 69.9 | 0.019 | Random |
Employment status (Official vs. contract) | 5 | 9.4 | 57.7 | 0.041 | Random |
Education level (< 12 years vs. > 12 years) | 16 | 73.5 | 79.5 | < 0.001 | Random |
Marital status (Single vs. married) | 9 | 15.1 | 47.1 | 0.056 | Fixed |
Education level (< 16 years vs. > 16 years) | 4 | 2.5 | 0.0 | 0.471 | Random |
Gender (females vs. males) | 27 | 111.7 | 76.7 | < 0.001 | Random |
Attending in training course (No vs. yes) | 8 | 14.9 | 53.2 | 0.036 | Random |
Work experience (< 5 years vs. > 5 years) | 5 | 10.8 | 63.2 | 0.028 | Random |
Job stress (severe vs. mild) | 3 | 7.8 | 74.3 | 0.020 | Random |
Work experience (< 10 yeas vs. > 10 years) | 10 | 37.6 | 76.0 | < 0.001 | Random |
Age (< 30 vs. > 30) | 13 | 69.6 | 82.7 | < 0.001 | Random |
Shift working (night vs. day) | 8 | 59.2 | 88.1 | < 0.001 | Random |
Ward (surgical vs. medical) | 11 | 68.8 | 85.4 | < 0.001 | Random |
Shift working (rotate vs. fixed) | 7 | 41.8 | 85.6 | < 0.001 | Random |
Age (< 35 vs. > 35) | 4 | 1.5 | 0.0 | 0.679 | Fixed |