New methods can extend the use of minimal important difference units in meta-analyses of continuous outcome measures

Johnston, Bradley C; Thorlund, Kristian; da Costa, Bruno R; Furukawa, Toshi A; Guyatt, Gordon H (2012). New methods can extend the use of minimal important difference units in meta-analyses of continuous outcome measures. Journal of clinical epidemiology, 65(8), pp. 817-26. New York, N.Y.: Elsevier 10.1016/j.jclinepi.2012.02.008

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For continuous outcomes measured using instruments with an established minimally important difference (MID), pooled estimates can be usefully reported in MID units. Approaches suggested thus far omit studies that used instruments without an established MID. We describe an approach that addresses this limitation.

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