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. 2023 Mar 2;6(3):e231455. doi: 10.1001/jamanetworkopen.2023.1455

Figure 1. Study Profile for China Stroke Prevention Project Committee Stroke Program in 2020.

Figure 1.

A stratified, cluster-randomized sampling design was used to select the screening points included in the study. Reasons for exclusion classified as "other" in the diagram included other reasons included household-level refusal, implicit refusal, and noncontact.