Correction: BMC Geriatr 22, 118 (2022)

https://doi.org/10.1186/s12877-022-02796-z

After publication of this article [1], the authors reported that in Fig. 1, the number of participants without data in the CHARLS 2014 survey should have been 1549 (instead of 2376); the figure should have appeared as shown below.

Fig. 1
figure 1

Study flowchart of participant selection

The original article [1] has been updated.