Table 2.
Baseline, six-month, and change values for physical performance measures in China (n=30) compared to the US (n=30).
| Group | Unadjusted values [95% CI] | Adjusted* mean difference [95% CI] and p-value | |
|---|---|---|---|
| Baseline Chair Stands (repetitions) | US China |
11.3 [10.1, 12.5] 3.0 [1.8, 4.2] |
Reference −10.0 [−11.8, −8.2] p < 0.001 |
| Six-month Chair Stands (repetitions) | US China |
13.8 [12.9, 14.8] 12.0 [11.1, 12.9] |
Reference −2.6 [−4.0, −1.3] p = 0.003 |
| Change (Six-month – Baseline) Chair Stands (repetitions) |
US China |
2.5 [1.6, 3.4] 9.0 [8.0, 9.9] |
Reference 1.5 [−0.6, 3.6] p = 0.15 |
| Baseline Six-Minute Walk (meters) | US China |
398.7 [359.8, 437.6] 213.0 [174.8, 251.2] |
Reference −262.7 [−312.4, −213.0] p < 0.001 |
| Six-month Six-Minute Walk (meters) | US China |
446.8 [415.6, 478.1] 542.6 [511.4, 573.9] |
Reference 37.9 [−1.6, 77.4] p = 0.06 |
| Change (Six-month – Baseline) Six-Minute Walk (meters) |
US China |
48.7 [28.1, 69.2] 329.6 [309.4, 349.8] |
Reference 185.7 [136.2, 235.3] p < 0.001 |
*
Adjusted for baseline age, BMI, and comorbidity. Change outcomes are additionally adjusted for baseline values of Chair Stands or Six-Minute Walk.