Table 2

Comparison of contributions of Katz (Self-Report) and Charlson (Medical-Record) comorbidity information to EQD-5 (Quality-of-Life) scores
Outcome:3-Month EQD-5 (N=438) Model R-Squared R-squared Change F-Test/ F-change Degrees of freedom P-value
Model with covariates onlya 0.259 0.259 10.56 14/423 <0.0005
Covariate model +Katz 0.288 0.029 17.27 1/422 <0.0005
Covariate Model + Charlson 0.262 0.003 1.64 1/422 >0.201
Outcome: 8-Month EQD-5 (N=387) Model R-Squared R-squared Change F-Test/ F-change Degrees of freedom P-value
Model with covariates onlya 0.240 0.240 8.40 14/372 <0.0005
Covariate model +Katz 0.265 0.025 12.52 1/371 <0.0005
Covariate Model + Charlson 0.245 0.005 2.28 1/371 >0.132

a. covariates: age, gender, race, education, household income, marital status, depressive symptomatology (CESD), ejection fraction, invasive cardiac procedures.

Olomu et al.

Olomu et al. BMC Health Services Research 2012 12:398   doi:10.1186/1472-6963-12-398

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