Baseline-adjusted proportional odds models for the quantification of treatment effects in trials with ordinal sum score outcomes
Abstract Background Sum scores of ordinal outcomes are common in randomized clinical trials. The approaches routinely employed for assessing treatment effects, such as t-tests or Wilcoxon tests, are not particularly powerful in detecting changes in relevant parameters or lack the ability to incorpor...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
BMC
2020-05-01
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Series: | BMC Medical Research Methodology |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1186/s12874-020-00984-2 |