Table 2
Prescriptions with high-risk abbreviations across three sources categorised according to whether they were preintervention or postintervention
| Preintervention | Postintervention | |||||
|---|---|---|---|---|---|---|
| Prescription source | Number of patients | Incidence*(%) | Number of patients | Incidence*(%) | IRD† (%) | χ2 (df=1) |
| Hospital emergency wards (M/F emergency departments) | 42 | 40.9 (90/220) | 30 | 10.7 (15/140) | 73.8 | 37.756‡ |
| Pharmacy department | 220 | 72.7 (160/220) | 178 | 39.3 (70/178) | 45.9 | 45.001‡ |
| Inpatient settings | 220 | 47.3 (104/220) | 180 | 23.3 (42/180) | 50.7 | 24.479‡ |
| Total | 482 | 53.6 (354/660) | 388 | 25.5 (127/498) | 52.4 | 92.517‡ |
*Incidence of high-risk abbreviation use calculated by using the equation:
†Incidence rate decrease (IRD) can be calculated by
‡p=0.001 (statistically significant at α=0.05).
