Study Design

[Placeholder] Overview of the sampling strategy, cohort structure, and assessment protocol used in this study.

Sample and recruitment

[Placeholder text describing how participants were sampled — e.g. drawn from a parent cohort, stratified by region or age, recruitment period, and response rates.]

Assessment protocol

[Placeholder text describing the assessment battery, mode of administration (in-person, phone, self-report), and any harmonization with other studies.]

Data collection waves

Wave	Year	N	Focus
Wave 1	[Year]	[N]	[Placeholder focus]
Wave 2	[Year]	[N]	[Placeholder focus]
Wave 3	[Year]	[N]	[Placeholder focus]

Measures and domains

[Domain 1, e.g. Cognition]: [Placeholder instruments used]
[Domain 2, e.g. Health]: [Placeholder instruments used]
[Domain 3, e.g. Biomarkers]: [Placeholder instruments used]
[Domain 4, e.g. Informant report]: [Placeholder instruments used]