Validation of the Chinese version of the abnormal eating behavior questionnaire in people with dementia.

Abnormal eating behaviors are common in patients with dementia. To comprehensively assess and understand these issues, we validated the Chinese version of the Abnormal Eating Behaviour Questionnaire. Data for psychometric property evaluation were obtained from 129 patients with dementia. Internal consistency, test-retest reliability, dimensionality, and concurrent validity of the instrument were tested. The instrument showed acceptable internal consistency (Cronbach's alpha 0.73), time stability (Intra-class correlation coefficient 0.88, 95% CI: 0.77-0.94), and concurrent validity (ρ = 0.60, P < 0.001). Six factors (eigenvalues > 1, factor loading ≥ 0.3) explaining 55.1% of the variance were obtained through exploratory factor analysis. Overall, 86.8% of the participants showed at least one abnormal eating behavior. The instrument is reliable and valid for assessing abnormal eating behaviors in patients with dementia. Patients with dementia had a high prevalence of abnormal eating behaviors.