HAALSI Dementia Wave 1

The Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community (HAALSI) Dementia study collects detailed neuropsychological and functional assessments, informant interviews as well as neurological and clinical evaluations on a sub-sample of HAALSI individuals aged 50 and older (see Figure 1 for summary). The final sample included 635 participants who completed at least part of the study. Of those, 631 participants completed the cognitive battery (see variable respondent_status), 630 completed the informant interview (see variable inf_status), and 590 completed the neurological examination (see variable neuro_status). In total, 582 participants completed all three components of the study: cognitive battery, informant interview and neurological examination.