title: Response shift in oral health-related quality of life measurement in patients with partial edentulism.
abstract: 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.
authors.affiliation: Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Shikata-cho, Okayama, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kimura
authors.forename: H
authors.initials: H
authors.lastname: Arakawa
authors.forename: K
authors.initials: K
authors.lastname: Noda
authors.forename: S
authors.initials: S
authors.lastname: Yamazaki
authors.forename: E S
authors.initials: ES
authors.lastname: Hara
authors.forename: T
authors.initials: T
authors.lastname: Mino
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuka
authors.forename: R
authors.initials: R
authors.lastname: Mulligan
authors.forename: T
authors.initials: T
authors.lastname: Kuboki
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003829:Denture, Partial / Q000523:psychology*; D005260:Female; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D009909:Oral Health; D017060:Patient Satisfaction; D011788:Quality of Life; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D016388:Tooth Loss / Q000534:rehabilitation*; D016896:Treatment Outcome; D055815:Young Adult