TABLE 4.
Simple regression equations to predict the level of the 6MWT based on sex, age, height and weight, (N = 643).
| Study variables | Unstandardized estimates; 95% CI (P—value*) | Regression equation for the 6MWT |
|---|---|---|
| Model 1 | ||
| Constant (intercept) | 705.56; 688.66 to 722.46 (<0.001) | 705.56–31.65 * sex (1—men; 2—women) |
| Sex (1—men; 2—women) | −31.65; −41.65 to −21.65 (<0.001) | |
| Model 2 | ||
| Constant (intercept) | 1,121.89; 1,081.15 to 1,162.62 (<0.001) | 1,121.89—35.98 * sex (1—men; 2—women)—6.05 * age (years) |
| Sex (1—men; 2—women) | −35.98; −42.35 to −29.06 (<0.001) | |
| Age (years) | −6.05; −6.62 to −5.47 (<0.001) | |
| Model 3 | ||
| Constant (intercept) | 394.58; 315.90 to 472.26 (<0.001) | 394.58 + 11.44 * sex (1—men; 2—women)—5.66 * age (years) + 3.77 * height (cm) |
| Sex (1—men; 2—women) | 11.44; 4.77 to 18.10 (<0.001) | |
| Age (years) | −5.66; −6.08 to −5.24 (<0.001) | |
| Height (cm) | 3.77; 3.39 to 4.15 (<0.001) | |
| Model 4 | ||
| Constant (intercept) | 308.16; 253.25 to 363.09 (<0.001) | 308.16 + 5.59 * sex (1—men; 2—women)—5.55 * age (years) + 5.05 * height (cm)—1.65 * weight (kg) |
| Sex (1—men; 2—women) | 5.59; 0.96 to 10.23 (0.018) | |
| Age (years) | −5.55; −5.85 to −5.26 (<0.001) | |
| Height (cm) | 5.05; 4.77 to 5.34 (<0.001) | |
| Weight (kg) | −1.65; −1.80 to −1.50 (<0.001) | |