Epidemiology of insomnia disorder in older persons according to the Diagnostic and Statistical Manual of Mental Disorders: a systematic review and meta-analysis

Key summary points Aim What are the prevalence and correlates of insomnia disorder in older persons according to the Diagnostic and Statistical Manual of Mental Disorders (DSM)? Findings The pooled prevalence of insomnia disorder in older persons according to the DSM was 19.6%, and varied according to the sample size, the age cutoff used, and the study quality (risk of bias). Insomnia in older persons is associated with the female gender, depression, anxiety, as well as cardiovascular, respiratory, and painful conditions. Message Further researches are needed with a focus on African populations, the widening of sample sizes, and the comparison according to the institutionalization status.