Table 2.
Mean utility scores of the instruments and adjusted differences between the two utility scores according to symptom frequency level
| Clinical symptom | Symptom frequency level | Level definition | % per level |
Mean utility (±SD)
a
|
Mean utility (±SD)
a
|
Difference between utilities, adjusted mean (±SD) a | P value b |
|---|---|---|---|---|---|---|---|
| EQ-5D | OAB-5D | ||||||
| Micturitions/24 h |
1 |
< 8 |
21.2 |
0.85 (±0.21) |
0.90 (±0.08) |
0.046 (±0.396) |
<.0001 |
| 2 |
8 - < =10 |
30.7 |
0.84 (±0.20) |
0.87 (±0.09) |
0.025 (±0.458) |
<.0001 |
|
| 3 |
10 - < =12 |
22.7 |
0.82 (±0.21) |
0.85 (±0.09) |
0.015 (±0.401) |
0.0205 |
|
| 4 |
12 - < = 14 |
13.2 |
0.80 (±0.22) |
0.82 (±0.09) |
0.007 (±0.325) |
0.3073 |
|
| 5 |
> 14 |
12.3 |
0.78 (±0.23) |
0.80 (±0.09) |
0.007 (±0.331) |
0.3477 |
|
| Incontinence episodes/24 h | 1 |
0 |
50.3 |
0.85 (±0.19) |
0.89 (±0.08) |
0.032 (±0.470) |
<.0001 |
| 2 |
> 0 - < = 1 |
19.7 |
0.82 (±0.20) |
0.85 (±0.09) |
0.019 (±0.320) |
0.0006 |
|
| 3 |
1 - < =2 |
11.0 |
0.80 (±0.22) |
0.83 (±0.09) |
0.009 (±0.262) |
0.1529 |
|
| 4 |
2 - < =3 |
6.9 |
0.78 (±0.23) |
0.81 (±0.09) |
0.006 (±0.229) |
0.4157 |
|
| 5 | > 3 | 12.2 | 0.76 (±0.26) | 0.79 (±0.09) | 0.004 (±0.290) | 0.5353 |
aSD: Standard deviation.
bt-test to test the null hypothesis that the adjusted difference equals zero.