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. 2025 Jan 7;11:1457768. doi: 10.3389/fnut.2024.1457768

Table 2.

Pooled prevalence of sarcopenia according to different subgroups.

Subgroups Studies (n) Participants (n) Prevalence, % (95% CI) I 2 P-value for χ2 P-value for interaction
Overall 8 8,856 22.1 (18.7–25.6) 94.7% <0.001 NA
Diagnostic criteria
AWGS 2 1,145 18.5 (14.3–22.7) 70.7% 0.065 0.002
EWGSOP 6 7,946 23.6 (18.9–28.3) 96.3% <0.001
FNIH 1 644 16.5 (13.6–19.3) NA NA
SARC-F 1 409 25.2 (21.0–29.4) NA NA
Sex
Men 4 1,880 23.2 (21.3–25.1) 0.0% 0.298 0.023
Women 4 1,991 15.5 (9.2–21.9) 92.1% <0.001
Study period
<2015 4 7,391 22.9 (18.0–27.8) 97.1% <0.001 0.504
≥2015 4 1,465 20.7 (16.5–24.9) 75.1% 0.007
Study quality
High 6 8,142 22.6 (18.8–26.4) 95.5% <0.001 0.649
Moderate 2 714 20.1 (10.2–30.0) 91.4% 0.001
Study location
Bushehr 1 2,426 27.4 (19.6–35.2) NA NA 0.457
Ravansar 1 4,021 22.0 (20.7–23.3) NA NA
Shiraz 1 501 20.8 (17.2–24.3) NA NA
Tehran 5 1,908 20.7 (16.1–25.3) 90.8% <0.001
Sample size, n
<500 4 1,264 20.0 (15.5–24.5) 75.7% 0.005 0.313
500–1,000 2 1,145 21.4 (14.2–28.6) 95.1% <0.001
>1,000 2 6,447 25.6 (19.9–31.3) 97.4% <0.001

CI, confidence interval; NA, not applicable; AWGS, Asian Working Group for Sarcopenia; EWGSOP, European Working Group on Sarcopenia in Older People; FNIH, Foundation for the National Institutes of Health; SARC-F, Strength, Assistance walking, Rising from a chair, Climbing stairs, Falls.