General population norms of the Swedish short forms of Oral Health Impact Profile

Abstract

We reported the development and psychometric evaluation of a Swedish 14-item and a five-item short form of the Oral Health Impact Profile. The 14-item version was derived from the English-language short form developed by Slade in1997. The five-item version was derived from the German-language short form developed by John et al. in 2006. Validity, reliability and normative values for the two short form summary scores were determined in a random sample of the adult Swedish population (response rate: 46%, N = 1366 subjects). Subjects with sufficient OHRQoL information to calculate a summary score (N = 1309) were on average 50·1 ± 17.4 years old, and 54% were women. Short form summary scores correlated highly with the 49-item OHIP-S (r ≥ 0.97 for OHIP-S14, r ≥ 0.92 for OHIP-S5) and with self-report of oral health (r ≥ 0.41). Reliability, measured with Cronbach's alpha (0.91 for OHIP-S14, 0.77 for OHIP-S5), was sufficient. In the general population, 50% of the subjects had ≥2 OHIP-S14 score points and 10% had ≥11 points, respectively. Among subjects with their own teeth only and/or fixed dental prostheses and with partial removable dental prostheses, 50% of the population had ≥2 OHIP-S14 score points, and 10% had ≥11 points. For subjects with complete dentures, the corresponding figures were 3 and 24 points. OHIP-S5 medians for subjects in the three population groups were 1, 1 and 2 points. Swedish 14-item and 5-item short forms of the OHIP have sufficient psychometric properties and provide a detailed overview about impaired OHRQoL in Sweden. The norms will serve as reference values for future studies.

A 7-day recall period for a clinical application of the oral health impact profile questionnaire

“…Summary scores from these alternate forms are known to correlate highly with summary scores from the long form OHIP [48–50]. These findings suggest that our results are likely to generalize to other OHIP versions.…”

Validation of the English-language version of 5-item Oral Health Impact Profile

“…While OHIP5 was used in international patients and general population subjects, e.g., in Japanese prosthodontic patients[2], Dutch TMD patients[10] or Swedish general population subjects[11], this instrument has not been thoroughly investigated in an English-speaking population. However, it is known that the psychometric properties, e.g., the validity and the reliability, of the scores depend on the population where the instrument is being used.…”

The course of prosthodontic patients’ oral health-related quality of life over a period of 2 years

“…7 Recent research revealed that the OHIP covers the four main domains of OHRQoL, namely Oral Function, Orofacial Pain, Orofacial Appearance, and Psychosocial Impact. [8][9][10] The most widely used and methodologically best investigated OHRQoL instrument, [11][12][13][14][15][16][17] the OHIP provides both norms 18,19 and minimal important differences, 1,20 allowing the researcher and clinician to rate not only the clinical significance of studies' findings but also to compare those findings across many different populations.…”