Table 4.

Comparison of mean scores and validity statistics by eGFRa

MeasureMean (SD) ScoreF Statisticη2bRV (95% CI)
GFR 30–59, n=153GFR 15–29, n=50GFR<15, n=17
KDQOL-36
 Burden (+)79.9 (24.0)69.6 (24.8)55.5 (23.1)9.9c0.081.0
 Effects (+)84.8 (15.7)81.5 (18.9)70.3 (17.4)6.1d0.050.61 (0.20 to 1.62)
 Symptoms (+)82.6 (14.1)78.6 (16.3)77.4 (16.8)2.00.020.20 (0.00 to 0.67)
CKD-QOL
 CKD-QOL-6 (−)41.4 (6.8)44.8 (7.4)47.7 (8.1)9.1c0.080.92 (0.30 to 2.03)
 CKD-QOL-CAT(−)39.4 (8.63)44.4 (8.6)47.5 (8.4)11.5c0.101.15 (0.51 to 2.56)
 Three- or six-item CAT (−)40.1 (7.9)44.5 (8.3)48.5 (8.3)12.4c0.101.25 (0.54 to 2.85)
SF-12v2
 PCS (+)45.4 (10.5)42.2 (9.9)43.1 (10.2)2.00.020.20 (0.01 to 0.77)
 MCS (+)50.7 (10.2)50.7 (10.3)48.3 (9.9)0.40.000.04 (0.00 to 0.19)
  • Means are unadjusted. 95% CI, 95% confidence interval.

  • a Abstracted from medical record.

  • b η2 estimate of variance explained by groups (see text); significance is same as F ratio.

  • c P<0.001 (see text).

  • d P<0.05 (see text).