Table 2.
Mean and Standard Deviation of Physical Performance Measures by Self-identified Racial/Ethnic Group
| Sample Size, Mean ± SD | Racial/Ethnic Groups | p-Value | ||||
|---|---|---|---|---|---|---|
| White | African American | Hispanic | Chinese | Japanese | ||
| 40-ft walk speed, m/s | 1.39 ± 0.26 n = 657 |
1.27 ± 0.27 n = 439 |
— | 1.46 ± 0.28 n = 173 |
— | <.0001 |
| 4-m gait speed, m/s | 1.00 ± 0.34 n = 798 |
0.86 ± 0.19 n = 445 |
1.05 ±1.11 n = 80 |
0.84 ± 0.16 n = 173 |
1.13 ± 0.18 n = 164 |
<.0001 |
| SPPB, 0–12 | 9.02 ± 2.07 n = 805 |
7.71 ± 2.36 n = 455 |
7.10 ± 2.06 n = 84 |
8.28 ± 1.93 n = 174 |
10.38 ± 1.75 n = 168 |
<.0001 |
| 5-Repeated chair stand, s | 10.70 ± 2.99 n = 787 |
12.10 ± 3.63 n = 423 |
12.82 ± 6.36 n = 83 |
10.92 ± 2.88 n = 172 |
9.61 ± 2.33 n = 167 |
<.0001 |
| Total stair climb time, s | 20.61 ± 5.48 n = 626 |
23.40 ± 8.10 n = 332 |
27.15 ± 7.00 n = 76 |
21.56 ± 6.00 n = 171 |
18.80 ± 3.40 n = 165 |
<.0001 |
Notes: Sites recruiting Hispanic and Japanese women did not perform the 40-ft walk speed. SPPB = Short Physical Performance Battery.