Situation of dementia measured by Revised Hasegawa's Dementia Scale and its associated factors in Thaibinh, Vietnam

As Vietnam's population has been aging, dementia is becoming more prevalent. This study aims to identify the prevalence of dementia and its related factors among older adults in Thaibinh Province, Vietnam. A cross-sectional study was conducted among 762 older adults living in two communes of Thaibinh Province, Vietnam. The Revised Hasegawa's Dementia Scale (HDS-R) Vietnamese version was used as a screening instrument for dementia. Participants were interviewed using face-to-face method. Descriptive statistics and multivariable logistic regression analyses were calculated in this study. The overall rate of dementia among older adults was 22.7%. Female were more likely to develop dementia than male participants (adjusted odds ratio [AOR] = 6.5; 95% confidence interval (95% CI), 2.71-15.64). Participants aged 70 or older, who had personal income of 3 million Vietnam Dong and higher (AOR = 5.7; 95% CI, 3.01-10.77), who smoke or used to smoke, who had poor vision ability (AOR = 8.9; 95% CI, 1.77-44.77), who had hypertension (unadjusted odds ratio [UOR] = 2.0; 95% CI, 1.24-3.38), and who with less ability of self-eating (UOR = 10.6; 95% CI, 3.31-33.73) were more likely to have dementia. Participants who had education levels of primary school and higher and who self-rated health as healthy (AOR = 0.5; 95% CI, 0.23-0.95) were less likely to have dementia. The prevalence of dementia among older adults was quite high in Vietnam. Associated factors including education level and smoking should be considered in future studies to prevent dementia among aging population.