Table 1

Comparison of contributions of Katz (Self-Report) and Charlson (Medical-Record) comorbidity information to ASI (Functional-Capacity) scores
Outcome:3-Month ASI (N=438) Model R-Squared R-squared Change F-Test/ F-change Degrees of freedom P-value
Model with covariates onlya 0.317 0.317 14.43 14/423 <0.0005
Covariate model +Katz 0.340 0.023 14.20 1/422 <0.0005
Covariate Model + Charlson 0.331 0.014 14.29 1/422 <0.0035
Outcome: 8-Month ASI (N=387) Model R-Squared R-squared Change F-Test/ F-change Degrees of freedom P-value
Model with covariates onlya 0.334 0.334 13.31 14/372 <0.0005
Covariate model +Katz 0.358 0.025 14.22 1/371 <0.0005
Covariate Model + Charlson 0.370 0.036 21.15 1/371 <0.0005

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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