Applied pressure at the injection site v no applied pressure in adults receiving hepatitis A and B vaccinations‡
| Outcome after injection | Applied pressure (mean, SE) | No applied pressure (mean, SE) | Mean pain reduction(95% CI) | Mean relative pain reduction |
|---|---|---|---|---|
| ‡Data provided by the author. | ||||
| Pain perception (0 = no pain, 10 = crucifying pain) | 1.77 (0.17) | 2.87 (0.18) | 1.1(1.06 to 1.13) | 38% |