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Does the mode of administration of the Oral Health Impact Profile-49 affect the outcome score?

Lookup NU author(s): Radhika Desai, Professor Justin DurhamORCiD, Dr Robert Wassell, Professor Philip Preshaw

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Abstract

Objective: To determine if there are differences in outcome scores if the Oral Health Impact Profile-49 (OHIP-49) is delivered by two different modes of administration (manual-self complete versus telephone interview). Methods: Patients with chronic periodontitis (n = 83, 54% females and 46% males, mean age 49.1 +/- 9.5 years) completed the OHIP-49 using two modes of administration (manual self-complete and telephone interview) in a randomly assigned order, with a minimum washout period of 2 weeks between modes, both episodes occurring prior to any periodontal treatment being provided. To assess convergent validity, after each mode of administration, the patients were additionally asked a global question about their oral health-related quality of life (OHRQoL). Results: Median OHIP-49 scores recorded by manual self-complete (median 36 [IQR = 20-70]) were significantly higher than those recorded by telephone interview (median 27 [ IQR = 1161]) (p < 0.01). The global question was well correlated to the OHIP domains, but did not reveal any evidence of an order effect such as was seen with OHIP-49 itself (which showed a higher impact on OHRQoL during the first administration in either mode). Conclusions: The mode of administration (manual-self complete versus telephone interview) did substantially influence the OHIP-49 scores in patients with chronic periodontitis. The OHRQoL differed between the two modes of administration, with significantly higher scores (indicating poorer OHRQoL) when the questionnaire was manually self-completed. Clinical significance: The mode of administration of quality of life questionnaires such as OHIP-49 could potentially affect the outcome scores derived. This study investigated whether there is a difference in outcome scores if OHIP-49 is delivered via manual self-complete or by telephone interview in patients with chronic periodontitis. We found that there was a significant difference between the two modes: manual self-completion by the patients yielded significantly higher scores than completion by telephone interview. It is therefore important to be consistent in the mode of completion of OHIP-49, as mixing modes could introduce additional error into clinical studies that utilise this instrument. (C) 2013 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Desai R, Durham J, Wassell RW, Preshaw PM

Publication type: Article

Publication status: Published

Journal: Journal of Dentistry

Year: 2014

Volume: 42

Issue: 1

Pages: 84-89

Print publication date: 01/01/2014

Online publication date: 29/10/2013

Acceptance date: 12/10/2013

Date deposited: 01/12/2015

ISSN (print): 0300-5712

ISSN (electronic): 1879-176X

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.jdent.2013.10.016

DOI: 10.1016/j.jdent.2013.10.016

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