**5. Conclusions**

This meta-analysis and meta-regression provides a comprehensive synthesis of sarcopenia prevalence in current literature targeting Chinese older populations not only from communities, but also from clinical settings and nursing homes. This is, to our knowledge, the first study to report pooled prevalence in Chinese older populations from clinical settings and nursing homes, and to examine the impact of populations from different settings, diagnostic criteria, muscle mass assessments, areas and walk distance of gait speed test on the prevalence estimate of sarcopenia via meta-regression analysis. Despite the variations in prevalence estimate across studies, this study revealed a certain proportion of Chinese older adults suffering from sarcopenia, especially for those who were hospitalized and residing in nursing homes. Considering the accelerating pace of aging, efforts should be made to implement early screening and lifestyle interventions such as nutrition and physical activity promotion to prevent this increasingly widespread age-related geriatric syndrome, especially for vulnerable groups.

**Supplementary Materials:** The following are available online at https://www.mdpi.com/article/10 .3390/nu13051441/s1, S1: Search strategy; Table S2 Critical Appraisal of Study Quality; Table S3 Univariable meta-regression for regions; Table S4 Age and BMI reported in studies; Table S5 Univariable meta-regression for age.

**Author Contributions:** Conceptualization, P.-H.C., Z.C., and M.H.; acquisition of data, Z.C. and W.-Y.L.; formal analysis, Z.C. and P.-H.C.; writing—original draft preparation, Z.C.; writing—review and editing, P.-H.C., M.H., Z.C., and W.-Y.L., supervision, P.-H.C. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Data sharing not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
