Table 4.
Construct validity: longitudinal comparisons for health outcomes among participants with high (≥4) vs. low (<4) SARC‐F scores*
| African American Health | SARC‐F scores ≥ 4 | |
| Odds ratio (95% CI) | P‐value* | |
| Hospitalized overnight in the past year | 2.43 (1.46–4.05) | <0.001 |
| Gait speed < 0.8 m/s | 2.46 (1.13–5.34) | 0.023 |
| Mortality | 1.87 (1.17–2.98) | 0.009 |
| Unstandardized coefficients | P‐value* | |
| B (SE) | ||
| Instrumental Activities of Daily Living (IADLs; 0–8) | 0.78 (0.27) | 0.004 |
| Chair stands (s) | 3.14 (1.1) | 0.004 |
| Grip strength (kg) | −1.07 (1.0) | 0.288 |
| Short physical performance battery (0–12) | −0.29 (0.08) | <0.001 |
| Baltimore Longitudinal Study of Aging | SARC‐F scores ≥ 4 | |
| Unstandardized coefficients | P‐value* | |
| B (SE) | ||
| IADLs (0–7) | 1.24 (0.22) | <0.001 |
| Grip strength, right hand (kg) | −2.44 (1.19) | 0.041 |
| Grip strength, left hand (kg) | −2.96 (1.26) | 0.019 |
| Odds ratio (95% CI) | P‐value* | |
| Mortality | 3.00 (1.57–5.73) | <0.001 |
CI, confidence interval; SE, standard error.
*
Linear regression for continuous outcomes and logistic regression for dichotomous outcomes. Mortality analyses adjusted for age and gender. All other analyses adjusted for age, gender, and baseline value of the outcome variable being examined.