Table 3 Comparison of reporting rates (incident reports/10 000 occupied bed days/emergency department attendances) by profession.
| Professional designation | Baseline | End | Significance of the interaction term† | Absolute difference (SEM)‡ | |||||
|---|---|---|---|---|---|---|---|---|---|
| Control reports | Intervention reports | Risk ratio* (95% CI) | Control reports | Intervention reports | Risk ratio* (95% CI) | ||||
| Reporting rates/10 000 OBDs | |||||||||
| Doctors | 0.2 (1/44 380) | 0.6 (3/48 073) | 0.4 (0 to 3.4) | 0.7 (3/45 762) | 6.3 (31/49 061) | 0.1 (0 to 0.3) | 0.213 | 5.2 (3.6) | |
| Nurses | 50.5 (224/44 380) | 80.3 (386/48 073) | 0.6 (0.5 to 0.7) | 88.5 (405/45 762) | 177.3 (870/49 061) | 0.5 (0.4 to 0.6) | <0.001 | 59.0 (17.9) | |
| Allied health | 1.1 (5/44 380) | 5.2 (25/48 073) | 0.2 (0 to 0.5) | 3.3 (15/45 762) | 14.5 (71/49 061) | 0.3 (0.1 to 0.4) | <0.001 | 7.1 (4.4) | |
| Reporting rates/10 000 ED attendances | |||||||||
| Doctors | 0.8 (3/39 504) | 0 (0/37 781) | N/A | 0.3 (1/38 760) | 9.0 (26/28 888) | 0.03 (0 to 0.2) | 0.001 | 9.5 (3.7) | |
| Nurses | 18.7 (74/39 504) | 5.8 (22/37 781) | 3.2 (2.0 to 5.3) | 19.3 (75/38 760) | 31.2 (90/28 888) | 0.6 (0.5 to 0.8) | 0.302 | 24.8 (9.2) | |
| Allied health | 0.3 (1/39 504) | 0 (0/37 781) | N/A | 0.3 (1/38 760) | 21.1 (61/28 888) | 0.1 (0 to 0.06) | 0.001 | 21.1 (5.3) | |
ED, emergency department; ICU, intensive care unit; N/A, not applicable; OBD, occupied bed day.
*Comparison made using Fisher's exact test.
†Comparison between baseline and end of intervention made using Poisson regression analysis, adjusting for clustering by hospitals, and allowing for robust estimates of standard errors. In order to test for the significance of the intervention effect, the statistical significance of the interaction term was assessed.
‡Absolute difference in change in reporting rates/10 000 OBDs (inpatient units) or 10 000 ED attendances between intervention and control units at the end of the study compared with those at baseline.