The questionnaire included sections on demographic and socioeconomic variables, self-reported chronic conditions, depressive symptoms, medications currently used, falls and fear of falling, disability, life course history of socioeconomic conditions, exposure to domestic violence, reproductive history, physical activity, smoking and alcohol and illegal drug use, quality of life, neighbourhood social, economic and physical characteristics, social networks and support, social participation, gender roles, decision making power, financial autonomy and life space assessment.

Two tests of cognitive function were used. The Leganes Cognitive Test (LCT) was administered to all IMIAS participants. The Montreal Cognitive Assessment (MoCA) was used only in the Canadian sample. At baseline, participants with scores lower than 4 (severe cognitive impairment) in the orientation scale of the Leganes Cognitive Test were excluded from the study because they were considered unable to answer the questionnaire and to complete the physical function tests, as well as freely consent to the study.

Vision assessment, blood pressure, grip strength, physical performance based on assessments of gait speed, balance and chair stands were also carried out.

Blood and saliva samples were collected.

The questionnaire included sections on demographic and socioeconomic variables, self-reported chronic conditions, depressive symptoms, medications currently used, falls and fear of falling, disability, life course history of socioeconomic conditions, exposure to domestic violence, reproductive history, physical activity, smoking and alcohol and illegal drug use, quality of life, neighbourhood social, economic and physical characteristics, social networks and support, social participation, gender roles, decision making power, financial autonomy and life space assessment. New variables were included in the second wave interviews: housing quality, driving experience, resilience, personal mastery, pain, urinary incontinence and an additional disability scale: the Late Life Disability Index.

Two tests of cognitive function were used. The Leganes Cognitive Test (LCT) was administered to all IMIAS participants. The Montreal Cognitive Assessment (MoCA) was used only in the Canadian sample.

Vision assessment, blood pressure, grip strength, physical performance based on assessments of gait speed, balance and chair stands were also carried out.

Blood and saliva samples were collected.

The questionnaire included sections on demographic and socioeconomic variables, self-reported chronic conditions, depressive symptoms, medications currently used, falls and fear of falling, disability, life course history of socioeconomic conditions, exposure to domestic violence, reproductive history, physical activity, smoking and alcohol and illegal drug use, quality of life, neighbourhood social, economic and physical characteristics, social networks and support, social participation, gender roles, decision making power, financial autonomy and life space assessment. Additionally, information on housing quality, driving experience, resilience, personal mastery, pain, urinary incontinence and disability was collected.

Two tests of cognitive function were used. The Leganes Cognitive Test (LCT) was administered to all IMIAS participants. The Montreal Cognitive Assessment (MoCA) was used only in the Canadian sample.

Vision assessment, blood pressure, grip strength, physical performance based on assessments of gait speed, balance and chair stands were also carried out.

Blood and saliva samples were collected.