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Letters Evaluating complex interventions

What is and what could be

BMJ 2010; 340 doi: https://doi.org/10.1136/bmj.c1340 (Published 10 March 2010) Cite this as: BMJ 2010;340:c1340
  1. Peter A West, health economist1
  1. 1York Health Economics Consortium, University of York, York
  1. p.a.west{at}blueyonder.co.uk

    Mackenzie and colleagues confuse a range of different issues when evaluating a community wellness programme.1 Whatever the problems of randomisation and standardisation, all kinds of detailed monitoring would provide some valuable research data, even with imperfections. For example, different projects used different methods to contact their target population groups.1 How did they do it and …

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