Multiplicity in rehabilitation research: A quantitative assessment

K. J. Ottenbacher

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Recent studies indicate that rehabilitation researchers frequently include multiple tests of significance in their investigations. This study examined the possibility that the Type I error rate in rehabilitation research is inflated due to the inappropriate analysis of data from multiple significance tests. The incidence of Type I error was computed for a sample of rehabilitation research. The results revealed a Type I error rate substantially higher than the traditionally assumed level of 5% (p<.05). The argument is made that methods to determine the rate of Type I error should be routinely used in rehabilitation research.

Original languageEnglish (US)
Pages (from-to)170-173
Number of pages4
JournalArchives of Physical Medicine and Rehabilitation
Issue number3 I
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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