Defending the Controlled Trial
Lancet 1980 October 4; 2(8197): 731
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So You Want to Conduct a Cluster Randomized Controlled Trial? Lessons From a National Cluster Trial of Early Labour Hundley, Vanora; Cheyne, Helen; Bland, J Martin; Styles, Maggie; Barnett, Carol A (2010-06)As the discipline of health services research has developed so methods of evaluation have become increasingly sophisticated; where once a 'simple' randomized controlled trial would have been considered the gold standard, ...