Assessment of oral health-related quality of life: Comparison of two measurement tools

Development of patient-based outcome measures has enhanced our ability to assess the oral health-related quality of life (OHRQoL). Present study aimed to compare the performance of the Geriatric Oral Health Assessment Index (GOHAI) and the Oral Health Impact Profile-14 (OHIP-14) as two methods of assessment of oral health-related quality of life.
In this cross-sectional survey, a sample of 400 healthy participants which were 18-65 years old was recruited in Kerman School of Dentistry, Iran. Main measurement tools were the validated Persian version of GOHAI and OHIP-14 questionnaires. Data were collected by means of personal interview. Internal consistency and discriminant validity were carried out to compare the two measures.
The internal consistencies of both tools were acceptable and Pearson’s correlation coefficient between the scores was 0.739. Both measures discriminated between dentate subjects over and under 25 natural teeth and wearing removable dentures or not, both also showed significant associations with dental attendance, self-rated oral health and satisfaction with oral health status.
Both GOHAI and OHIP-14 are appropriate instruments with equal power for survey of OHRQoL on under-elderly population.