Table 5

Univariable and multivariable predictors of distance (m) performance in 6 minutes walking test
Univariable predictors Multivariable predictors Multivariable predictors
Model 1 Model 2
β P β P β P
Age -.305 0.004 -.406 <0.001 -.323 <0.001
Gender .153 0.064
BMI -.649 <0.001 -.595 <0.001
FEV1 .305 0.004
FEV1/FVC .196 0.067
IC .272 0.010
IC/TLC .361 <0.001
DLCO SB .390 <0.001 .547 <0.001 .608 <0.001
SATrest .288 0.006
TR -.386 <0.001 -.239 0.005
E/e’ -.285 0.015

BMI, gender, residual volume, functional residual capacity, total lung capacity and cardiac stroke volume index were also tested for univariable prediction but were insignificant.

Model 1 tests multivariable prediction of baseline variables (age, gender, BMI) and lung function variables only (FEV1, FEV1/FVC, IC, IC/TLC, TLC, RV, DLCO SB, SATrest).

Model 2 tests echochardiographic univariable predictors of 6MWD (TR, CI, E/e’) added to model 1. Overall adjusted r2 values for model 1 and 2 are 0.475 and 0.511 respectively.

Schoos et al.

Schoos et al. BMC Cardiovascular Disorders 2013 13:84   doi:10.1186/1471-2261-13-84

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