Table 1 Search strategy

# 1 TS = (sarcopen* OR aging OR muscle atrophy)

# 2 TI = (prevalence OR incidence OR cross-sectional OR cohort)

# 3 TI = (older adults OR elder* OR seniors OR community-dwelling)

(#3 AND #2 AND #1)

Sarcopenia prevalence

Prevalence of sarcopenia

1. Sarcopenia/

2. sarcopenia.ti,ab.

3. 1 or 2

4. Muscular Atrophy/

5. (musc* adj1 atrophy).ti,ab.

6. 4 or 5

7. aging.ti,ab.

8. Aging/

9. 7 or 8

10. 6 and 9

11. “Aged, 80 and over”/ or Aged/

12. Prevalence/

13. Cross-Sectional Studies/

14. 12 or 13

15. 3 or 10

16. 11 and 14 and 15

1. Sarcopenia/

2. sarcopenia.ti,ab.

3. 1 or 2

4. Muscular Atrophy/

5. (musc* adj1 atrophy).ti,ab.

6. 4 or 5

7. Aging/

8. aged.ti,ab.

9. 7 or 8

10. 6 and 9

11. Aged/

12. “Aged, 80 and over”/

13. 11 or 12

14. Prevalence/

15. Incidence/

16. Cohort Studies/

17. Cross-Sectional Studies/

18. 3 or 10

19. 14 or 15 or 16 or 17

20. 13 and 18 and 19

S1. TI Sarcopenia OR AB Sarcopenia

S2. TI (MH “Muscular Atrophy”)

S3. S1 OR S2

S4. TI Aged OR AB Aged

S5. (MH “Aged, 80 and Over”)

S6. S4 OR S5

S7. (MH “Prevalence”) OR (MH “Cross Sectional Studies”) OR (MH “Surveys”) OR (MH “Epidemiological Research”)

S8. S3 AND S6 AND S7