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Pooled incidence rate of cervical cancer per 100 000 woman-years.
Subgroup analyses according to age at cervical intraepithelial neoplasia (CIN) treatment, treatment method for CIN, CIN grade, and length of follow-up.
CI, confidence interval; IR, incidence rate; N/A, not available (i.e. meta-analysis not possible); PI, prediction interval.
