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Managing missing scores on the Roland Morris Disability Questionnaire.

Authors
Type
Published Article
Journal
Spine
0362-2436
Publisher
Ovid Technologies (Wolters Kluwer) - Lippincott Williams & Wilkins
Publication Date
Volume
36
Issue
22
Pages
1878–1884
Identifiers
DOI: 10.1097/BRS.0b013e3181ffe53f
PMID: 21304432
Source
Medline
License
Unknown

Abstract

Because of less error when missing data are present, the most accurate method for expressing RMDQ sum scores collected using Yes/No answers is conversion to a 0 to 100 scale. This conversion method is (a) if all questions are answered or only one question is unanswered, multiply the raw sum score by 100 divided by the total number of questions, and (b) if two or more questions are unanswered, multiply the raw sum score by 100 divided by the number of answered questions.

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