Error rate by prescription element in handwritten versus FormularyScript
| Prescription element | Handwritten, N (%) | FormularyScript, N (%) | Δ % | p Value | CI |
| Drug name | 4349 (20.8) | 4146 (1.1) | 19.7 | <0.001 | 18.5 to 21.0 |
| Strength | 1188 (11.8) | 911 (0.0) | 11.8 | <0.001 | 9.9 to 13.6 |
| Route | 565 (17.0) | 161 (1.2) | 15.7 | <0.001 | 12.2 to 19.3 |
| Which eye | 3789 (7.5) | 3986 (2.6) | 4.9 | <0.001 | 4.0 to 5.9 |
| Frequency | 4349 (5.4) | 4146 (0.3) | 5.1 | <0.001 | 4.4 to 5.8 |
| Dispense amount | 4349 (1.3) | 4146 (0.2) | 1.1 | <0.001 | 0.7 to 1.5 |