Kramer MS, Martin RM, Sterne JA, Shapiro S, Mourad D, Platt RW (2009)

The double jeopardy of clustered measurement and cluster randomisation. BMJ 339:503-505.

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Kramer-etal-2009-kp1 Kramer-etal-2009-kp2

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Kramer MS, Martin RM, Sterne JA, Shapiro S, Mourad D, Platt RW (2009). The double jeopardy of clustered measurement and cluster randomisation. BMJ 339:503-505.

Acknowledgements

The editors are grateful to:

BMJ for allowing the James Lind Library to link to this and other BMJ articles of historical relevance (email to Iain Chalmers from Fiona Godlee, 05 May 2015).

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