Measure | Mean change score by self-evaluated outcomea
| F-ratio | RVb
| 95 % CIc
|
---|
Much better | Somewhat better | Same | Somewhat worse | Much worse |
---|
| (N = 244) | (N = 245) | (N = 1181) | (N = 282) | (N = 37) | | | |
---|
QDIS-7d
| −2.76 | −0.04 | 1.29 | 3.20 | 5.87 | 29.80 | 1.00 | - |
SF-8 PCSd
| 1.36 | −0.71 | −0.28 | −3.22 | −4.98 | 14.15 | 0.47 | (0.24,0.85) |
SF-8 MCSd
| 1.33 | −0.47 | 0.14 | −0.33 | −0.91 | 2.06 | 0.07 | (0.00,0.15) |
-
aSelf-evaluated change groups were defined as much better, somewhat better, about the same, somewhat worse, or much worse now in response to the question: “Compared to nine months ago, how much better or worse is your < DISEASE > now?”, where DISEASE was the pre-ID condition
-
bRelative validity (RV) is computed as the ratio of the comparator F-statistic over the largest F-statistic for that comparison
-
cComparator confidence intervals (CI) estimated using bootstrap
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dNorm-based scoring of all measures based on US general population norms (mean = 50, SD = 10). QDIS-7 scored so a higher score equals worse health; SF-8 scored so a higher score equals better health