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. 2014 Jul 3;9(1):37. doi: 10.1186/2049-6958-9-37

Table 3.

Multiple regression analysis of predictors of the 6MWD (m)

Model 1 Coefficient B Std. Error Coefficient β t p
Residual
 434.893
 162.825
  
 2.67
 0.014
Quadriceps muscle strength (Nm)
 10.02
 3.96
 0.42
 2.53
 0.019
FEV1 (% predicted)
 2.29
 1.04
 0.371
 2.20
 0.038
Age (years) -4.30 2.56 -0.28 -1.68 0.107

6MWD, 6-minute walk distance; FEV1, forced expiratory volume in one second (r2 = 0.524).