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)‡
Professional designation		Control reports	Intervention reports	Risk ratio*(95% CI)	Control reports	Intervention reports	Risk ratio*(95% CI)	Significance of the interaction term†	Absolute difference(SEM)‡
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.
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)