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. 2021 Sep 28;4(9):e2125577. doi: 10.1001/jamanetworkopen.2021.25577

Figure 1. Flowchart of Study Sample From the China Health and Retirement Longitudinal Study (CHARLS).

Figure 1.

H(+) indicates husbands with functional limitations; H(−), husbands without functional limitations; W(+), wives with functional limitations; W(−), wives without functional limitations.