Table 3.

Sub-Group Analysis by Specialty

	Family Medicine			Internal Medicine
Factors	Pre-Intervention Order Rate	Combined Intervention Absolute Effect	% Change^*	Pre-Intervention Order Rate	Education Memo Absolute Effect	% Change^*
Age, years
≥65	5.36	−1.18	−22%^†	8.84	−1.27	−14%
<65	5.04	−1.11	−22%	10.61	−2.35	−22%
Gender
Males	2.98	−0.91	−31%^†	7.09	−1.79	−25%
Females	6.51	−1.25	−19%	11.78	−1.94	−16%
Race
Caucasian	4.79	−1.24	−26%^†	9.87	−1.84	−19%
African American	5.18	−0.97	−19%	9.2	−2.13	−23%
Type of visit
Preventive	12.77	−3.45	−27%	26.83	−6.69	−25%
Nonpreventive	4.21	−0.77	−18%^†	7.41	−1.25	−17%
Provider type
MD	4.99	−0.79	−16%	10.70	−1.47	−14%
PA	5.83	−2.72	−47%	7.65	−3.98	−52%
NP	5.41	−1.10	−20%	7.19	−2.42	−34%

MD, medical doctor; NP, nurse practitioner; PA, physician assistant.
↵* % Change presented in this table are all statistically significant (p < 0.05).
↵† Statistically significant post-intervention slope.