Table 2.
Summary of results.
| Studies | Effect size and 95% CI |
Heterogeneity |
Publication bias |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Effect size | 95% CI | P-value | I2 | 95% PI | P-value | Egger test | Missed study | Adjusted values | ||||||
| Adenoma outcomes | ||||||||||||||
| Adenoma miss rate (RR) | 7 | 0.495 | 0.390 | 0.627 | 0.00030 | 48.76% | 0.286 | 0.857 | 0.080 | 0.65 | NA | |||
| Adenoma detection rate (RR) | 29 | 1.242 | 1.159 | 1.332 | <0.0001 | 78.87% | 0.886 | 1.742 | <0.0001 | 0.00080 | 9 | 1.144 | 1.048 | 1.249 |
| Adenoma per colonoscopy (IRR) | 29 | 1.390 | 1.277 | 1.513 | <0.0001 | 86.24% | 0.909 | 2.126 | <0.0001 | 0.00040 | 5 | 1.311 | 1.184 | 1.451 |
| Adenoma per colonoscopy (WMD) | 19 | 0.202 | 0.144 | 0.259 | <0.0001 | 68.15% | −0.017 | 0.420 | 0.089 | 0.017 | 6 | 0.155 | 0.075 | 0.235 |
| Polyp outcomes | ||||||||||||||
| Polyp miss rate (RR) | 5 | 0.475 | 0.294 | 0.768 | 0.013 | 87.49% | 0.135 | 1.679 | <0.0001 | 0.57 | NA | |||
| Polyp detection rate (RR) | 24 | 1.238 | 1.158 | 1.323 | <0.0001 | 81.67% | 0.922 | 1.662 | <0.0001 | 0.0026 | 7 | 1.155 | 1.071 | 1.245 |
| Poly per colonoscopy (IRR) | 27 | 1.388 | 1.270 | 1.517 | <0.0001 | 91.99% | 0.892 | 2.160 | <0.0001 | 0.073 | NA | |||
| Poly per colonoscopy (WMD) | 10 | 0.271 | 0.144 | 0.398 | 0.00090 | 65.61% | −0.107 | 0.649 | 0.14 | 0.96 | NA | |||
| Procedure time | ||||||||||||||
| Insertion time (WMD) | 13 | −0.090 | −0.234 | 0.053 | 0.20 | 29.82% | −0.502 | 0.321 | 0.70 | 0.94 | NA | |||
| Inspection time (WMD) | 18 | 0.330 | 0.087 | 0.573 | 0.012 | 93.15% | −0.647 | 1.307 | <0.0001 | 0.68 | NA | |||
| Adverse event | ||||||||||||||
| Adverse event rate (RR) | 20 | 0.837 | 0.629 | 1.114 | 0.21 | 0.94% | 0.536 | 1.305 | 1.0 | 0.46 | NA | |||
CI, confidence interval; PI, prediction interval; RR, risk ratio; IRR, incidence rate ratios; WMD, weighted mean difference; NA, not applicable.