1. Patient satisfaction.
| Study | Design | Intervention/comparison | Measure | Satisfied |
| Anderson 2004 | RCT | IPA/Saline/Peppermint | 100 mm VAS (0 mm extremely dissatisfied; 100 mm fully satisfied) | IPA: 90.3 (SD: 14.9) peppermint: 86.3 (SD: 32.3) saline: 83.7 (SD: 25.6) |
| Cotton 2007 | RCT | IPA/ondansetron | 4‐point DOS (poor, fair, good, excellent) |
Good or excellent: Intervention: 38/38 Comparison: 34/34 |
| Pellegrini 2009 | RCT | IPA/Promethazine | 5‐point DOS (1 = totally unsatisfied, 5 = totally satisfied) |
Both groups reported median score 4 |
| Winston 2003 | RCT | IPA/ondansetron | 4‐point DOS (poor, fair, good, excellent) |
Good or excellent: Intervention: 38/50 Comparison: 30/50 |
DOS: descriptive ordinal scale; IPA: isopropyl alcohol; RCT: randomized controlled trial; SD: standard deviation; VAS: visual analogue scale