(Q46034182)
Statements
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Attrition bias in rheumatoid arthritis databanks: a case study of 6346 patients in 11 databanks and 65,649 administrations of the Health Assessment Questionnaire. (English)
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Eswar Krishnan
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Kirsten Murtagh
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Bonnie Bruce
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Denise Cline
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Gurkirpal Singh
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James F Fries
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1 July 2004
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31
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7
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1320-1326
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