Table 2.
Level coding in the DCE
| Attributes | Levels |
|---|---|
| Mode and frequency of administration | Oral pill, once daily, at home |
| Oral pill, three times a week, at home | |
| Subcutaneous injection, once every 4 weeks, at home | |
| Subcutaneous injection, once every 2 weeks, at homea | |
| Need for iron supplementation | No iron supplements |
| Oral iron daily, at home | |
| IV iron once every 3–6 months, in a medical facilitya | |
| Risk of gastrointestinal side effects | 0% |
| 20% | |
| 50%a | |
| Risk of a major cardiovascular event | 5% |
| 10% | |
| 15%a | |
| Energy levels | You always have a lot of energy |
| You sometimes have a lot of energy | |
| You rarely have a lot of energya |
DCE discrete choice experiment, IV intravenous
aReference category