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J Bone Joint Surg Am. 2011 Feb 2;93(3):e8. doi: 10.2106/JBJS.I.01555.

Is a subgroup claim believable? A user's guide to subgroup analyses in the surgical literature.

Author information

1
Department of Clinical Epidemiology and Biostatistics, McMaster University, HSC 2C, 1200 Main Street West, Hamilton, ON L8N 3Z5, Canada. sunx26@mcmaster.ca
PMID:
21266635
PMCID:
PMC3028449
DOI:
10.2106/JBJS.I.01555
[Indexed for MEDLINE]
Free PMC Article

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