Table 5 Meta-regression analysis of variables predicting preoperative anxiety
Continuous variables | Number of studies | Regression coefficient (SE) | 95% CI | p Value | Q(model) |
|---|---|---|---|---|---|
Mean age of intervention group (Year) | 9 | 0.137 (0.052) | 0.033 to 0.241 | P < 0.001 | 6.74 |
Mean age of control group (Year) | 9 | 0.150 (0.067) | 0.019 to 0.282 | 0.0246 | 5.05 |
Total sample size | 9 | -0.005 (0.003) | -0.012 to 0.0009 | 0.090 | 2.87 |
Baseline anxiety severity | 6 | -0.004 (0.011) | -0.027 to 0.018 | 0.699 | 0.15 |
Year of publication | 9 | -0.004 (0.054) | -0.110 to 0.102 | 0.937 | 0.01 |
High education (%) | 6 | 0.001 (0.010) | -0.018 to 0.021 | 0.870 | 0.03 |
Duration of video (Minute) | 9 | -0.066 (0.0436) | -0.152 to 0.018 | 0.126 | 2.34 |
Nulliparous (%) | 6 | -0.011 (0.010) | -0.032 to 0.010 | 0.305 | 1.05 |
Categorical variables |  |  |  |  |  |
Outcome measurement tool (Reference: STAI vs. other tools) | 9 | -0.105 (0.324) | -0.740 to 0.530 | 0.746 | 0.10 |