Measuring Quality of Life in Residential Aged Care Using the EQ-5D-5L: A Cross-Sectional Study on the Impact of Cognition Level and Proxy Perspective on Interrater Agreement
Table 2
Descriptive statistics for EQ-5D-5L utility scores and EQ VAS scores for the total sample and by the cognition subgroup.
No cognitive impairment (n = 22)
Mild cognitive impairment (n = 27)
Moderate cognitive impairment (n = 14)
Total sample (n = 63)
Test of difference across subgroups
Self-report
Mean (SD) utility
0.473 (0.411)
0.531 (0.415)
0.583 (0.301)
0.522 (0.388)
H (2) = 0.34,
Median (25th–75th percentile) utility
0.638 (0.275, 0.714)
0.597 (0.300, 0.858)
0.578 (0.411, 0.781)
0.597 (0.338, 0.810)
—
Mean (SD) EQ VAS
73.8 (25.8)
77.7 (18.9)
69.8 (25.3)
74.6 (22.8)
H (2) = 0.72,
Median (25th–75th percentile) EQ VAS
80 (61, 90)
80 (69, 95)
75 (50, 88)
80 (60, 93)
—
Proxy-proxy
Mean (SD) utility
0.278 (0.403)
0.234 (0.438)
0.457 (0.199)
0.299 (0.389)
H (2) = 1.69,
Median (25th–75th percentile) utility
0.443 (−0.078, 0.582)
0.352 (−0.169, 0.628)
0.491 (0.400, 0.600)
0.487 (−0.013, 0.626)
—
Mean (SD) EQ VAS
67.1 (16.4)
56 (21.1)
60.9 (19.1)
60.9 (19.4)
H (2) = 4.31,
Median (25th–75th percentile) EQ VAS
72.5 (51, 79)
57 (40, 70)
69 (50, 75)
65 (50, 75)
—
Proxy-person
Mean (SD) utility
0.439 (0.383)
0.323 (0.495)
0.522 (0.249)
0.408 (0.415)
H (2) = 0.80,
Median (25th–75th percentile) utility
0.562 (0.321, 0.704)
0.511 (−0.169, 0.663)
0.588 (0.385, 0.629)
0.531 (0.161, 0.665)
—
Mean (SD) EQ VAS
64.5 (15.9)
59.3 (22.1)
58.4 (20.4)
60.9 (19.6)
H (2) = 1.04,
Median (25th–75th percentile) EQ VAS
66.5 (50, 75)
60 (39, 80)
50 (50, 69)
61 (50, 77)
—
Test of difference across raters
Utility scores
H (2) = 4.47,
H (2) = 7.22,
H (2) = 1.63,
H (2) = 12.94,
EQ VAS scores
H (2) = 4.87,
H (2) = 15.14,
H (2) = 2.73,
H (2) = 20.26,
H (2) is the Kruskal–Wallis rank sum test statistic.
