Validity and reliability of the oral health-related caregiver burden index

This study developed the Oral Health-related Caregiver Burden Index (OHBI), which contains nine questions with five response options each. As a secondary objective, we aimed to clarify the relationship between oral health-related caregiver burden and general caregiver burden.

There are a few reports of the oral health-related caregiver burden.

Between January 2016 and February 2016, 155 participants enrolled in the study. We conducted the survey to examine the validity and reliability of OHBI. Additionally, the cut-off score for this scale was calculated, and the relationship between OHBI and general caregiver burden (BIC-11) was examined by binomial logistic regression.

Survey 1 was completed by 102 caregivers, of whom 58 (56.9%) were female. Survey 2 was completed by 40 caregivers, of whom 22 (55.0%) were female. Factor analysis revealed four factors in OHBI. Cronbach's α was .691-.866. OHBI scores were significantly associated with scores for each factor of the BIC-11. OHBI had a cut-off score of 10 (AUC=.881, sensitivity=.828, specificity=.744). A good-poor analysis revealed significant differences for discriminant validity. ICC, an indicator of reliability, was .449-.842. There was a significant relationship between caregiver burden and oral health-related caregiver burden according to binomial logistic regression analysis (P<.05).

We developed the OHBI as a multidimensional care burden scale, which comprises nine items covering five domains. Further, we verified the relationship between general caregiver burden and oral health-related caregiver burden.