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Table 3 Maximum likelihood estimates for the linear mixed model to estimate peak VO2 from 6-minute walk distance.

From: The six minute walk test accurately estimates mean peak oxygen uptake

Parameter M-I: Random Intercept Estimate ± SEE M-II: Random Coefficient Estimate ± SEE
Fixed Component   
Intercept 4.626 ± 0.516 4.948 ± 0.990
6-Minute Walk 0.024 ± 0.001 0.023 ± 0.002
SEE(AVG) 3.82 3.82
Random Component   
Intercept(SD) 0.91 ± 0.25 2.80 ± 0.79
Slope(SD)   0.01 ± >0.01
R(Slope, Intercept)   -0.94 ± 0.05
SEE(CON) 3.73 ± 0.08 3.66 ± 0.08
Log likelihood -2972.51 -2964.69