Designing and evaluating complex interventions to improve health care.

Campbell, Neil C; Murray, Elizabeth; Darbyshire, Janet; Emery, Jon; Farmer, Andrew; Griffiths, Frances; Guthrie, Bruce; Lester, Helen et al. · BMJ · 2007

review · Level V

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Abstract

Determining the effectiveness of complex interventions can be difficult and time consuming. <b>Neil C Campbell and colleagues</b> explain the importance of ground work in getting usable results

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