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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1.1 Occurrence of CIN2+ | 3 | Risk Ratio (IV, Random, 95% CI) | Subtotals only | |
| 1.1.1 18 months' surveillance | 2 | 4028 | Risk Ratio (IV, Random, 95% CI) | 1.50 [1.12, 2.01] |
| 1.1.2 24 months' surveillance | 3 | 4331 | Risk Ratio (IV, Random, 95% CI) | 1.14 [0.66, 1.97] |
