Rates by error type and subtype in handwritten versus FormularyScript
| Error type and subtype | Handwritten, N (%) | FormularyScript, N (%) | Δ % | p Value | CI |
| Legibility | 4349 (16.1) | 4146 (0.1) | 16.0 | <0.001 | 14.9 to 17.1 |
| Drug name | 4349 (5.7) | 4146 (0.1) | 5.6 | <0.001 | 4.9 to 6.3 |
| Strength | 1183 (5.8) | 904 (0.0) | 5.8 | <0.001 | 4.5 to 7.2 |
| Route | 564 (2.3) | 161 (0.0) | 2.3 | 0.052 | 1.1 to 3.5 |
| Which eye | 3785 (6.5) | 3985 (0.0) | 6.5 | <0.001 | 5.7 to 7.3 |
| Frequency | 4336 (4.6) | 4144 (0.0) | 4.6 | <0.001 | 4.0 to 5.2 |
| Dispense amount | 4336 (1.3) | 4144 (0.0) | 1.3 | <0.001 | 0.9 to 1.6 |
| Ambiguous | 4349 (0.6) | 4146 (2.5) | −1.9 | <0.001 | −2.4 to −1.3 |
| Drug name | 4336 (0.3) | 4144 (0.6) | −0.3 | 0.03 | −0.6 to −0.0 |
| Which eye | 3785 (0.3) | 3985 (2.5) | −2.2 | <0.001 | −2.6 to −1.6 |
| Incomplete | 4349 (16.1) | 4146 (0.1) | 16.1 | <0.001 | 14.8 to 17.0 |
| Medication name | 4344 (12.3) | 4145 (0.0) | 12.3 | <0.001 | 11.3 to 13.2 |
| Strength | 1184 (6.0) | 904 (0.0) | 6.0 | <0.001 | 4.6 to 7.3 |
| Route | 563 (15.3) | 161 (1.2) | 14.1 | <0.001 | 10.6 to 17.5 |
| Which eye | 3785 (0.2) | 3986 (0.1) | 0.0 | 0.70 | −0.1 to 0.2 |
| Frequency | 4346 (0.5) | 4146 (0.0) | 0.5 | <0.001 | 0.3 to 0.7 |
| Dispense amount | 4346 (0.1) | 4146 (0.0) | 0.0 | 0.34 | −0.0 to 0.0 |
| Abbreviation | 4349 (3.1) | 4146 (0.3) | 2.9 | <0.001 | 2.3 to 3.4 |
| Drug name | 4346 (3.1) | 4146 (0.3) | 2.9 | <0.001 | 2.3 to 3.4 |
| Accuracy | 4349 (0.8) | 4146 (0.6) | 0.2 | 0.21 | −0.1 to 0.6 |
| Drug name | 4336 (0.1) | 4146 (0.1) | −0.1 | 0.28 | −0.2 to 0.1 |
| Strength | 1187 (0.2) | 911 (0.0) | 0.2 | 0.21 | −0.1 to 0.4 |
| Route | 558 (0.2) | 154 (0.0) | 0.2 | 0.60 | −0.2 to 0.5 |
| Which eye | 3789 (0.5) | 3986 (0.1) | 0.4 | 0.001 | 0.2 to 0.7 |
| Frequency | 4349 (0.2) | 4146 (0.2) | 0.0 | 0.90 | −0.2 to 0.2 |
| Dispense amount | 4349 (0.0) | 4146 (0.2) | −0.2 | 0.004 | −0.3 to −0.1 |
| Any error | 4349 (32.9) | 4146 (3.5) | 29.4 | <0.001 | 27.9 to 30.9 |