Table 1.
Univariable | Multivariable** | ||||
---|---|---|---|---|---|
Variable | PE | p | PE | p | Reliability*** |
Percent predicted maximum work rate (%) | 0.216 | <0.001 | 0.216 | <0.001 | 79% |
Percent predicted VO2 at peak exercise (%) | 0.198 | <0.001 | |||
Percent predicted VO2 at anaerobic threshold (%) | 0.108 | 0.003 | |||
Percent predicted maximum oxygen pulse (%) | 0.079 | 0.03 | |||
Resting oxygen saturation (%) | 0.134 | 0.49 | |||
Chronotropic index | 1.699 | 0.77 |
PE, parameter estimate; VO2, oxygen consumption
Parameter estimates represent the degree of change in the Summary Score associated with a one integer unit change in the laboratory testing variable.
Analysis limited to 157 subjects with maximal effort indicated by a respiratory exchange ratio >1.1. Additionally, analysis of chronotropic index was further limited to those 134 subjects who did not have a current pacemaker.
R2=0.086 (R2 adjusted=0.079), p<0.001, n=157
From bootstrap bagging (presented for the variables included in the multivariable model)