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MEDICAL CARE Volume 41, Number 5, pp 593–596 ©2003 Lippincott Williams & Wilkins, Inc. Point Simple as Possible? Or Too Simple? Possible Limits to the Universality of the One Half Standard Deviation DORCAS E. BEATON,BSCOT, PHD “Everything should be made as simple as pos- Losing the Individual in the Average sible, but not simpler.” In their article, the authors refer to using the —attributed to Albert Einstein MID/MD in individual patients. As such, it func- In this issue of Medical Care, Norman et al tions like a diagnostic test for whether the person present their observation that the minimally im- has changed for the better or worse. In 43/56 effect portant difference (MID) when divided by the SD size estimates used, the approach to determining is consistently close to the value 0.5, and suggest 19 MID/MD was that of Jaeschke et al or that that it may be a universal standard. This idea explained in Redelmeier and Lorig, Redelmeier contrasts the view that the MID or minimal clin- 21 22 et al, and Wells et al. These approaches take a ically important difference (MCID) is a context- subset of patients who have had small but “im- specific attribute dependent
Medical Care – Wolters Kluwer Health
Published: May 1, 2003
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