Table 7.

Comparison of mean scores and RV by number of comorbid conditionsa

MeasureMean (SD) ScoreF Statisticη2bRV (95% CI)
0, n=1371, n=1402, n=833+, n=101
KDQOL-36
 Burden (+)62.8 (29.1)62.5 (30.3)57.5 (27.9)61.6 (30.3)0.60.000.09 (0.02 to 0.27)c
 Effects (+)72.3 (22.6)73.8 (22.3)72.5 (20.9)70.8 (23.4)0.40.000.05 (0.00 to 0.12)c
 Symptoms (+)79.1 (17.5)76.2 (16.8)73.4 (16.3)73.6 (16.2)3.0c0.020.39 (0.07 to 1.06)
CKD-QOL
 CKD-QOL-6 (−)47.0 (9.4)47.6 (9.5)46.8 (8.2)47.6 (9.4)0.20.000.03 (0.00 to 0.05)c
 CKD-QOL-CAT (−)46.2 (10.7)46.6 (10.5)47.2 (8.8)46.8 (10.0)0.20.000.02 (0.00 to 0.04)c
 Three- or six-item CAT (−)46.7 (10.3)47.1 (10.1)47.1 (9.0)47.0 (9.8)0.10.000.01 (0.00 to 0.01)c
SF-12v2
 PCS (+)43.0 (11.8)41.3 (10.7)40.3 (9.9)36.3 (10.2)7.6d0.051.0
 MCS (+)50.9 (9.4)50.2 (10.6)49.4 (11.2)49.2 (10.7)0.70.010.09 (0.00 to 0.33)c
  • Means are unadjusted. 95% CI, 95% confidence interval.

  • a Count of number of comorbid conditions abstracted from medical record (amputation above ankle, amputation below ankle, angina, cardiomegaly, chronic fatigue syndrome, congestive heart failure, chronic obstructive pulmonary disease, diabetes, fibromyalgia, foot ulcers for >3 months, hepatitis, HIV/AIDS, migraine headaches, myocardial infarction in past year, neuropathy/nerve damage, osteoarthritis, restless leg syndrome, rheumatoid arthritis, sleep disorders/insomnia/sleep apnea, and stroke).

  • c P<0.05 (see text).

  • d P<0.01 (see text).