Response shift in oral health-related quality of life measurement in patients with partial edentulism

A. Kimura, H. Arakawa, K. Noda, S. Yamazaki, E. S. Hara, T. Mino, Y. Matsuka, R. Mulligan, T. Kuboki

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29 Citations (Scopus)


The purposes of this study were to determine whether a response shift was observable after partial denture treatment and to identify the predictors that influenced the response shift magnitude and direction. A total of 173 consecutive patients with no more than eight missing teeth who received implant-supported, fixed or removable partial dentures at Okayama University Dental Hospital were asked to complete a full-version Oral Health-Related Quality of Life (OHRQoL) questionnaire before (pre-test) and after treatment (post-test). Additionally, a short form (then-test) consisting of seven questions selected from the full version had its reliability verified and was utilised to retrospectively assess the pre-treatment OHRQoL status. The difference between the summary scores of the then-test and the pre-test determined the response shift magnitude and direction. The then-test mean score (22·9±6·6) was significantly lower (worse OHRQoL) than that of the pre-test (26·4±5·2). The response shift effect size was of moderate magnitude and negative direction (d=-0·78). A multiple regression analysis showed that age (younger patients) (P<0·01), number of replaced teeth (fewer) (P<0·01) and pre-test scores (lower) (P<0·01) were the significant predictors for response shift. In conclusion, a response shift phenomenon with negative and moderate effect size was observed after partial denture treatment. The significant predictor variables were young age, fewer numbers of replaced teeth and lower pre-test scores.

Original languageEnglish
Pages (from-to)44-54
Number of pages11
JournalJournal of oral rehabilitation
Issue number1
Publication statusPublished - Jan 2012


  • Dental prosthesis
  • Oral health-related quality of life
  • Predictor variables
  • Quality of life
  • Response shift
  • Treatment efficacy

ASJC Scopus subject areas

  • Dentistry(all)


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