Table 2.
Utilities and disutilities
| Health states | Mean utilitya | (SD) | Disutilities: difference from health state A
|
Disutilities: difference from health state G
|
||
|---|---|---|---|---|---|---|
| Mean | (SD) | Mean | (SD) | |||
| A. Basic health state (oral treatment only) | 0.900 | (0.097) | – | – | – | – |
| Health states with oral and injectable treatmentb | ||||||
| B. Reconstitution, waiting, needle handling | 0.868 | (0.109) | −0.032 | (0.059) | −0.022 | (0.052) |
| C. Reconstitution, waiting | 0.872 | (0.109) | −0.027 | (0.058) | −0.018 | (0.052) |
| D. Reconstitution, needle handling | 0.879 | (0.102) | −0.020 | (0.040) | −0.011 | (0.030) |
| E. Reconstitution | 0.884 | (0.100) | −0.015 | (0.032) | −0.006 | (0.021) |
| F. Needle handling | 0.884 | (0.101) | −0.016 | (0.033) | −0.006 | (0.021) |
| G. No inconveniences | 0.890 | (0.100) | −0.009 | (0.025) | – | – |
Notes:
a
TTO scores are on a scale anchored with 0 representing dead and 1 representing full health;
b
health states B to G include the basic health state, plus treatment with a weekly injection.
Abbreviation: TTO, time trade-off.