Table 4.
Prediction of 6MWT gait speed and distance for presence and absence of dyspnea and first and third quartiles of ABI and 4-meter gait speed for 8 hypothetical observations.
| Independent variables | Predicted values | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| New Obs | ABI | Dyspnea | 4-Meter GS (m/sec) | Predicted 6MWT GS (m/sec) | 95%CLM of 6MWT GS (m/sec) | 95%PI of 6MWT GS (m/sec) | Predicted 6MWT Distance (m) | 95%CLM of 6MWT Distance (m) | 95%PI of 6MWT Distance (m) |
| 1 | 0.54 | No | 0.84 | 0.82 | (0.77,0.87) | (0.46,1.18) | 296 | (278,314) | (166,426) |
| 2 | 0.88 | No | 0.84 | 0.77 | (0.73,0.81) | (0.41,1.13) | 276 | (262,291) | (147,406) |
| 3 | 0.54 | Yes | 0.84 | 1.04 | (1,1.09) | (0.68,1.4) | 376 | (359,393) | (246,506) |
| 4 | 0.88 | Yes | 0.84 | 0.99 | (0.94,1.04) | (0.63,1.35) | 356 | (340,373) | (227,486) |
| 5 | 0.54 | No | 1.19 | 0.82 | (0.77,0.87) | (0.46,1.18) | 296 | (278,314) | (166,426) |
| 6 | 0.88 | No | 1.19 | 0.77 | (0.73,0.81) | (0.41,1.13) | 276 | (262,291) | (147,406) |
| 7 | 0.54 | Yes | 1.19 | 1.04 | (1,1.09) | (0.68,1.4) | 376 | (359,393) | (246,506) |
| 8 | 0.88 | Yes | 1.19 | 0.99 | (0.94,1.04) | (0.63,1.35) | 356 | (340,373) | (227,486) |
95%CLM = 95% confidence limits of the mean, 95%PI = 95% confidence interval of the individual prediction, GS = gait speed, ABI = ankle/brachial index, 6MWT = 6-minute walk test, Obs = observations.