Oral Impacts on Daily Performance in Norwegian adults: validity, reliability and prevalence estimates

Area of Science:

• Oral Health Research
• Psychometrics
• Public Health

Background:

• The Oral Impacts on Daily Performance (OIDP) instrument measures oral health's impact on daily life.
• Cross-cultural validation is essential for global public health assessments.

Purpose of the Study:

• To translate and validate the OIDP instrument for the Norwegian population.
• To assess the psychometric properties and reliability of the Norwegian OIDP.

Main Methods:

• Translation and cultural adaptation of the OIDP.
• Test-retest reliability (Cohen's kappa) and internal consistency (Cronbach's alpha) were assessed.
• Construct, criterion, and face validity were evaluated using self-reported oral health and demographic data.

Main Results:

• The Norwegian OIDP demonstrated good test-retest reliability (kappa=0.65) and high internal consistency (alpha > 0.80).
• The instrument showed construct, criterion, and face validity, correlating with self-reported oral health and remaining teeth.
• A prevalence of 18.3% reported at least one oral impact, with low overall impact on daily performance in the Norwegian adult population.

Conclusions:

• The Norwegian OIDP is a reliable and valid tool for assessing oral health-related quality of life.
• The OIDP exhibits a floor effect, limiting its sensitivity for detecting minor improvements in oral health at a population level.
• Current oral health status appears to have minimal impact on the daily performance of the Norwegian adult population.