HAALSI Dementia Wave 2

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). Wave 1 was conducted in 2019-2020, and the final sample included 635 participants who completed at least part of the study; 582 participants completed all three components of the study: cognitive battery, informant interview and neurological examination. All Wave 1 participants were invited to participate in Wave 2 of the Dementia study, which took place in 2022; additional participants were recruited from Wave 3 of the main HAALSI survey. The final sample included 683 participants who completed at least one section (513 longitudinal). Of those, 661 completed the neurological exam (469 longitudinal), 679 completed the informant interview (504 longitudinal), and 675 completed the respondent assessment (507 longitudinal). 653 participants completed all three components of the study.

非洲健康与老龄化：INDEPTH社区纵向研究（Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community，简称HAALSI）痴呆研究，针对50岁及以上HAALSI研究对象的亚样本，收集了详细的神经心理学与功能评估、知情人访谈数据，以及神经学与临床评估结果（研究概况见图1）。该研究第1波次（Wave 1）于2019-2020年开展，最终纳入635名至少完成部分研究流程的参与者，其中582名完成了研究全部三项内容：认知测评组合、知情人访谈与神经学检查。所有第1波次参与者均受邀参与2022年开展的痴呆研究第2波次（Wave 2），同时还从HAALSI主研究的第3波次（Wave 3）中招募了额外参与者。本次研究最终纳入683名至少完成一个研究模块的参与者，其中513名为纵向随访对象。在该群体中，661名完成了神经学检查（469名为纵向随访对象），679名完成了知情人访谈（504名为纵向随访对象），675名完成了受访者自评（507名为纵向随访对象）；另有653名参与者完成了研究全部三项内容。