Table 3.
Estimated parameters of the multinomial logit model (discrete choice experiment, patients)
| Attributes and levels | Participants (n = 226) | |||||||
|---|---|---|---|---|---|---|---|---|
| Coeff. | OR | SE coeff. | 95% CI | p value | Difference (highest to lowest level) | |||
| Type of medication | 0.514 | |||||||
| Pill-based treatment | 0.289 | 1.335 | 0.041 | 0.209 | 0.369 | 0.000 | ||
| Intramuscular injection (into the muscle) | − 0.225 | 0.798 | 0.041 | − 0.306 | − 0.145 | 0.000 | ||
| Subcutaneous injection (into the subcutaneous fatty tissue) | − 0.064 | 0.938 | 0.040 | − 0.142 | 0.014 | 0.107 | ||
| Frequency of dosing | 1.664 | |||||||
| Daily | − 0.906 | 0.404 | 0.065 | − 1.034 | − 0.778 | 0.000 | ||
| Weekly | − 0.456 | 0.634 | 0.060 | − 0.575 | − 0.337 | 0.000 | ||
| Every 2 months | 0.146 | 1.157 | 0.059 | 0.029 | 0.262 | 0.014 | ||
| Every 3 months | 0.459 | 1.583 | 0.059 | 0.342 | 0.576 | 0.000 | ||
| Every 6 months | 0.758 | 2.133 | 0.062 | 0.635 | 0.881 | 0.000 | ||
| Location of treatment | 0.340 | |||||||
| Physicians’ practice/hospital (medical staff administers treatment) | − 0.170 | 0.844 | 0.017 | − 0.204 | − 0.136 | 0.000 | ||
| Home-based (self-administered treatment) | 0.170 | 1.185 | 0.017 | 0.136 | 0.204 | 0.000 | ||
| Risk of short-term side effects | 0.494 | |||||||
| Low risk (1 of 1000 patients will experience short-term side effects) | 0.207 | 1.230 | 0.040 | 0.128 | 0.286 | 0.000 | ||
| Moderate risk (10 of 1000 patients will experience short-term side effects) | 0.080 | 1.083 | 0.040 | 0.001 | 0.159 | 0.046 | ||
| Higher risk (100 of 1000 patients will experience short-term side effects) | − 0.287 | 0.751 | 0.041 | − 0.367 | − 0.207 | 0.000 | ||
| Risk of long-term side effects | 1.298 | |||||||
| Low risk (1 of 1000 patients will experience short-term side effects) | 0.537 | 1.711 | 0.041 | 0.456 | 0.619 | 0.000 | ||
| Moderate risk (10 of 1000 patients will experience short-term side effects) | 0.224 | 1.251 | 0.040 | 0.146 | 0.302 | 0.000 | ||
| Higher risk (100 of 1000 patients will experience short-term side effects) | − 0.761 | 0.467 | 0.044 | − 0.847 | − 0.675 | 0.000 | ||
| Interaction with other medication or (party) drugs | 0.294 | |||||||
| No medication/drug interactions occur | 0.168 | 1.183 | 0.040 | 0.089 | 0.248 | 0.000 | ||
| Increased risk of reduced effect due to other medication | − 0.125 | 0.882 | 0.040 | − 0.204 | − 0.047 | 0.002 | ||
| Increased risk of reduced effect due to (party) drugs | − 0.043 | 0.958 | 0.040 | − 0.122 | 0.036 | 0.286 | ||
CI confidence interval, coeff. coefficient, OR odds ratio, SE standard error