Table 2 Summary of meta-analysis results and subgroups analysis
From: Tubal ligation and endometrial Cancer risk: a global systematic review and meta-analysis
Groups | Test of association | Heterogeneity | |||||
|---|---|---|---|---|---|---|---|
OR(95% CI) | P value | Model | Z | Chi square | P value | I square | |
study design | |||||||
 Cohort | 0.72(0.51–1.00) | 0.053 | Random | 1.94 | 67.04 | 0.001 | 95.5% |
 Case control | 0.47(0.18–1.21) | 0.116 | Random | 1.57 | 68.32 | 0.001 | 95.6% |
Date of publication | |||||||
 1996–2007 | 0.71(0.57–0.87) | 0.001 | Fixed | 3.22 | 5.86 | 0.119 | 48.8% |
 2008–2018 | 0.48(0.31–0.80) | 0.001 | Random | 3.24 | 145.62 | 0.001 | 97.9% |
Sample size | |||||||
 Less than 10,000 | 0.44(0.18–1.07) | 0.075 | Random | 1.78 | 65.91 | 0.001 | 97.0% |
 More than 10,000 | 0.73(0.52–1.03) | 0.071 | Random | 1.81 | 68.70 | 0.001 | 94.2% |
Study quality | |||||||
 High | 0.71(0.54–0.92) | 0.011 | Random | 2.54 | 72.00 | 0.001 | 93.1% |
 Moderate | 0.31(0.03–3.34) | 0.333 | Random | 0.97 | 58.49 | 0.001 | 98.3% |
Overall | 0.58(0.42–0.80) | 0.001 | Random | 3.40 | 152.30 | 0.001 | 95.4% |