Table 1. Overall Benefit of Analgesia Score (OBAS)a and Components.
| Item No. | Description (Scale) |
|---|---|
| 1 | Current pain (0 = minimal to 4 = maximum imaginable pain) |
| 2 | Distress and bother from vomiting in preceding 24 h (0 = not at all to 4 = very much) |
| 3 | Distress and bother from itching in preceding 24 h (0 = not at all to 4 = very much) |
| 4 | Distress and bother from sweating in preceding 24 h (0 = not at all to 4 = very much) |
| 5 | Distress and bother from freezing in preceding 24 h (0 = not at all to 4 = very much) |
| 6 | Distress and bother from dizziness in preceding 24 h (0 = not at all to 4 = very much) |
| 7 | Patient satisfaction related to pain management during the preceding 24 h (0 = not at all to 4 = very much) |
a
Calculated OBAS = (sum total of scores from items 1 through 6) + (4 − score from item 7); low OBAS indicates high benefit of analgesia.