Skip to main content
. Author manuscript; available in PMC: 2011 Mar 2.
Published in final edited form as: J Cardiopulm Rehabil Prev. 2010 May–Jun;30(3):195–202. doi: 10.1097/HCR.0b013e3181c565e4

Table 2.

COX PROPORTIONAL HAZARD MODEL SUMMARY FOR AGE AND/OR COMORBIDITY-ADJUSTED INFLUENCE OF PRE-6MWD AND POST-6MWD ON THE RISK OF DEATH AND FOR AGE-, COMORBIDITY-, AND PRE–6MWD-ADJUSTED INFLUENCE OF Δ6MWD ON THE RISK OF DEATH

6MWD ratio Estimate β Lower 95%, confidence limit Upper 95%, confidence limit
Age-adjusted 6MWD and risk of death
Pre-6MWD
 Log-hazard x m:2x m 0.056 0.001 0.111
 Hazard x m:2x m 1.058 1.001 1.118
Post-6MWD
 Log-hazard x m:2x m 0.291 0.211 0.370
 Hazard x m:2x m 1.337 1.234 1.448
Δ6MWD
 Log-hazard x m:2x m 0.060 −0.007 0.127
 Hazard x m:2x m 1.062 0.993 1.136
Age- and comorbidity-adjusted 6MWD and risk of death
Pre-6MWD
 Log-hazard x m:2x m 0.056 0.001 0.111
 Hazard x m:2x m 1.058 1.001 1.118
Post-6MWD
 Log-hazard x m:2x m 0.290 0.209 0.371
 Hazard x m:2x m 1.336 1.232 1.449
Δ6MWD
 Log-hazard x m:2x m 0.055 −0.013 0.122
 Hazard x m:2x m 1.056 0.987 1.130
Age-, comorbidity-, and pre–6MWD-adjusted 6MWD and risk of death
Δ6MWD
 Log-hazard x m:2x m 0.292 0.207 0.376
 Hazard x m:2 x m 1.339 1.231 1.457

Abbreviation: 6MWD, indicates 6-minute walk distance.

HHS Vulnerability Disclosure