The authors declare that they have no competing interests.
CJO conceived the study, co-organised the epidemiological oral survey, discussed the quality of life section and corrected the final draft. PV drafted the manuscript organised the data selection and performed the validity and reliability statistical analysis. WP participated in drafting the paper and discussing the relevant literature in the OHRQoL. AG contributed to the statistical analysis, YJ coordinated the original study, designed the sampling process, examined the psychometric tests and corrected the final version.
All authors read and approved the final manuscript.
To test the validity of the short form of the Oral Health Impact Profile (OHIP-14) for use among adults in Greece.
The original English version of the OHIP-14 was translated using the forward-backward technique, pilot-tested, and then applied to 211 adults aged 35 years and above. The questionnaire was filled out during face-to-face interviews conducted by one dentist, while individuals were asked to undergo a clinical examination. The internal consistency of the questionnaire was evaluated using Cronbach's alpha (α) coefficient and inter-item and item-total correlations. Discriminant and convergent validities were assessed.
Cronbach's α was estimated to be 0.90. Inter-item correlations coefficients ranged from 0.10 to 0.83, while item-total correlations coefficients from 0.44 to 0.76. Significant associations were found between OHIP-14 and the decayed, missing and filled teeth (DMFT) and oral hygiene, supporting the ability of the questionnaire to discriminate between individuals with and without impacts. The OHIP-14 total score was highly associated with self-perceived oral health status (rs = 0.57; p = 0.01), as well as with self-assessment of oral satisfaction (rs = 0.55;p = 0.01). Similar results were observed by investigating the relationship between the latter questions and each domain score as well as in various sub-groups analyses.
The OHIP-14 is a reliable and valid questionnaire for the assessment of OHRQoL among adults in Greece.