Standard methods of the Neonatal Review Group with use of relative risk (RR), risk difference (rd) and weighted mean difference (WMD).

新生儿评价组的标准方法，使用相对危险度(RR)，风险差(RD)和加权均数差(WMD)。

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For categorical data the relative risk (RR), risk difference (RD) and number needed to treat (NNT) with 95% confidence intervals (CI) were calculated.

对分类数据计算相对危险度(RR)，风险差(RD)和需治疗人数(NNT)及其95%可信区间(CI)。

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For categorical data the relative risk (RR), risk difference (RD) and number needed to treat (NNT) with 95% confidence intervals (CI) were calculated.

对分类数据计算相对危险度(RR)，风险差(RD)和需治疗人数(NNT)及其95%可信区间(CI)。

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