| Device attribute | Utility level | Device attribute | Utility level |
| Bruising* | Almost none | Telephone helpline | 24 h a day |
| A little | from 9 am to 5.30 pm | ||
| Significant | None | ||
| Operated by | Button – automatic injection | Injection | Without a needle |
| Pushing plunger (like a syringe) | With 0.5 cm long needle | ||
| Pain felt* | Slight twinge | With 1 cm long needle | |
| Distinct pinch | Size | 9 cm×3 cm | |
| Like blood test | 9 cm×6 cm | ||
| Weight | Like a pencil (10 g) | 15 cm×6 cm | |
| Like half an apple (50 g) | 15 cm×9 cm | ||
| Like a standard apple (100 g) | Nurse support at home | Available | |
| Like a large apple (150 g) | Not available | ||
| Sound made | None | Needle visibility | Hidden/not used |
| Soft (heard by user only) | A little visible | ||
| Distinct (heard within 2–3 m) | Clearly visible | ||
| Loud (heard by all those in same room) | Stored | In the fridge | |
| Preparation | No mixing required | At room temperature | |
| Mixing required weekly-to-monthly | Medicine | Delivered to home | |
| Ease of holding* | Very easy – adults/older children | Available from local chemist | |
| Very easy – adults | |||
| Fairly easy – adult |
*Attributes marked with an asterisk were not included within the model and hence did not influence the choice based analysis.