Confounding and Simpson's paradox

doi:10.1136/bmj.309.6967.1480

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Confounding and Simpson's paradox

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1994; 309 doi: http://dx.doi.org/10.1136/bmj.309.6967.1480 (Published 3 December 1994)

Cite this as: BMJ 1994;309:1480

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Confounding and Simpson's paradox

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Letter: The usefulness of metformin for diabetes control in older people

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Research: Implementation of self management support for long term conditions in routine primary care settings: cluster randomised controlled trial

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