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Slide Presentation from the AHRQ 2007 Annual Conference

ADEs by Practice Type

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ADEs (and PADEs) by Practice Type, All Data Sources Combined

All databases combined	Number of ADE hits	Total encounters	% of ADE hits (ADE/Total encounters)
UHMP eRx physicians	5343	3140310	0.17%
eRx physicians—PRE	3197	1831433	0.17%*
eRx physicians- POST	2146	1308877	0.16%*
UHMP physicians not eRx	1484	861938	0.17%
Control physicians	1831	522249	0.35%
Physicians not in a study group	5729	2607709	0.22%
Data that could not be assigned to a study group	4744	3238022	0.15%
Totals	19131	10370228	0.18%

*Difference between UHMP eRx PRE and POST is statistically significant (Chi-square = 4.990; p = .026)