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Figure 3 | BMC Health Services Research

Figure 3

From: Effects of automated alerts on unnecessarily repeated serology tests in a cardiovascular surgery department: a time series analysis

Figure 3

Changes in the repetition of HBs antigen testing from January 2004 to December 2007. A segmented regression analysis was performed to determine the impact of the intervention. Three periods were defined: the pre-intervention period (January 2004 to May 2006), the adjustment period, corresponding to CDSS adjustments (July 2006 to November 2006) and the effective intervention period (December 2006 to December 2007). June 2006 has been excluded from analysis since the intervention started mid-month.

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BMC Health Services Research

ISSN: 1472-6963

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