Towards the creation of a flexible classification scheme for voluntarily reported transfusion and laboratory safety events

Table 1 Transfusion report rates and time for report completion

Transfusion average reports per month	Inpatient	Outpatient
Pre-period (22 months)
Average number (± standard deviation)	102.1 ± 14.3	11.5 ± 14.3
Post-period (12 months)
Average number (± standard deviation)	91.6 ± 11.2	11.7 ± 2.5
P value	0.03*	0.9
Minutes to submit a transfusion safety report ^†	Inpatient	Outpatient
Pre-period (22 months)
Median time in minutes (range)	6.13	7.72
Median time in minutes (range)	(1.4-58.65)	(1.65-48.55)
Post-period (12 months)
Median time in minutes (range)	7.26	8.81
Median time in minutes (range)	(1.72-50.17)	(2.17-32.15)
P value	0.0001^††	0.02^††

Pre-period: April 1, 2008–February 9, 2010; Post-period: February 10, 2010–January 31, 2011.
*Significant difference based on t-test.
^†Excludes outliers ≥ 60 minutes (0.6% of reports).
^††Significant difference based on Wilcoxon rank-sum test.

ISSN: 2041-1480