問:收錄資料時,mean 之外,不見得每個都給 SD,有的是 95% CI,有的是 90% CI,這些能夠用嗎?
答:(蔡依橙)
可以的,SD 跟 95% CI 或 90% CI 都可以換算,但這個部分你需要自己手動處理一下,全部轉換成 SD 後輸入 CMA。
詳細的公式跟轉換,可以參考以下連結。這個就是鼎鼎大名的 Cochrane Handbook Chap 6。我們新課程的指定論文,參考資料都有引用,你也可以用一樣的引用。
- 3.1 Obtaining standard errors from confidence intervals and P values: absolute (difference) measures
Cochrane Handbook 提供了很多困難狀況的建議,像是轉換,或者推測。引用的話,也很方便。有困難的話,也可以到那邊去搜尋看看。我自己常用的幾個章節跟引用,如下。
- Higgins JPT, Li T, Deeks JJ. Chapter 6: Choosing effect measures and computing estimates of effect. Cochrane Handbook for Systematic Reviews of Interventions. Version 6.3 (updated February 2022).
- Deeks JJ, Higgins JPT, Altman DG. Chapter 10: Analysing data and undertaking meta-analyses. Cochrane Handbook for Systematic Reviews of Interventions. Version 6.3 (updated February 2022).
- Chaimani A, Caldwell DM, Li A, Higgins JPT, Salanti G. Chapter 11: Undertaking network meta-analyses. Cochrane Handbook for Systematic Reviews of Interventions version 6.3 (updated February 2022).
- Page MJ, Higgins JPT, Sterne JAC. Chapter 13: Assessing risk of bias due to missing results in a synthesis. Cochrane Handbook for Systematic Reviews of Interventions. Version 6.3 (updated February 2022).
- Higgins JPT, Eldridge S, Li T. Chapter 23: Including variants on randomized trials. Cochrane Handbook for Systematic Reviews of Interventions. Version 6.3 (updated February 2022). Cochrane Handbook for Systematic Reviews of Interventions 2022
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