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. Author manuscript; available in PMC: 2024 Nov 6.
Published in final edited form as: Lancet Healthy Longev. 2024 Oct 3;5(10):100616. doi: 10.1016/S2666-7568(24)00132-6

Figure 1: Participant distribution in studies included in the selective review per biomarker type across the Global South.

Figure 1:

Figure 1:

Heatmap illustrating the number of participants included in the selected biomarker studies across countries in the Global South. The figure illustrates the included studies across all types of neurodegenerative diseases across the different biomarker types: fluid biomarkers including plasma and CSF (A), cognitive studies (B), neuroimaging studies (C), and genetic studies (D). Due to the large number of controls in some genetic studies, figures for genetic studies exclude number of controls. CSF=cerebrospinal fluid.