| Type of error | No. (%) | |||
|---|---|---|---|---|
| Overall | Class I | Class II | Class III | |
| Medication discrepancy | ||||
| Discontinuation | 32 (38) | 29 (91) | 2 (6) | 1 (3) |
| Omission | 24 (28) | 19 (79) | 5 (21) | 0 |
| Change in dosage | 15 (18) | 11 (73) | 4 (27) | 0 |
| Change in frequency | 6 (7) | 5 (83) | 1 (17) | 0 |
| As needed to regular | 6 (7) | 5 (83) | 1 (17) | 0 |
| Regular to as needed | 2 (2) | 2 (100.0) | 0 | 0 |
| Total | 85 (100) | 71 (84) | 13 (15) | 1 (1) |
| Error of commission | ||||
| Reordering error | 17 (63) | 14 (82) | 3 (18) | 0 |
| Inappropriate continuation | 10 (37) | 3 (30) | 7 (70) | 0 |
| Total | 27 (100) | 17 (63) | 10 (37) | 0 |
*Based on a previously published classification system:1 class I errors were those deemed "unlikely to cause patient discomfort or clinical deterioration," class II errors had "the potential to cause moderate discomfort or clinical deterioration," and class III errors were defined as having "the potential to result in severe discomfort or clinical deterioration."