Table 4. Percentage of variance in health status explained by modeling health status as a function of single comorbidities and age. Testing population (n = 526)

a P < 0.05.
b See Table 2 for list of comorbidities.
+ diabetes, MI, congestive heart failure10a16a11a
+ comorbidities from Daviesb11a27a12a
+ comorbidities from Khanb13a29a13a
+ comorbidities from Charlsonb12a28a12a
+ all comorbiditiesb15a711a18a