Table 1.
Electronic prescriptions before and after implementation of decision support on generic availability
| Pre-implementation prescriptions (N=170751) | Post-implementation prescriptions (N=1015649) | Increase in generic prescriptions (% (95% CI)) |
|||
| Total (%) | Generic (%) | Total (%) | Generic (%) | ||
| Prescriber | 65991 (38.6) | 22644 (34.3) | 522196 (51.4) | 307821 (58.9) | 24.6 (24.2 to 25.0) |
| Nurse | 104760 (61.4) | 32200 (30.7) | 493453 (48.6) | 242791 (49.2) | 18.5 (18.2 to 18.8) |
| Anesthesiology | 7797 (4.6) | 2737 (35.1) | 12438 (1.2) | 7041 (56.6) | 21.5 (20.1 to 22.9) |
| EM | 1813 (1.1) | 502 (27.7) | 6406 (0.6) | 3709 (57.9) | 30.2 (27.8 to 32.6) |
| Family practice | 10919 (6.4) | 3015 (27.6) | 68550 (6.7) | 35790 (52.2) | 24.6 (23.7 to 25.5) |
| General surgery | 14060 (8.2) | 3310 (23.5) | 64024 (6.3) | 38300 (59.8) | 36.3 (35.5 to 37.1) |
| Medicine | 50205 (29.4) | 18438 (36.7) | 536722 (52.8) | 297780 (55.5) | 18.8 (18.3 to 19.2) |
| Med/Peds | 922 (0.5) | 342 (37.1) | 14260 (1.4) | 9497 (66.6) | 29.5 (26.3 to 32.7) |
| Neurology | 6487 (3.8) | 1588 (24.5) | 38424 (3.8) | 15920 (41.4) | 17.0 (15.8 to 18.1) |
| Neurosurgery | 74 (0.0) | 11 (14.9) | 6289 (0.6) | 2829 (45.0) | 30.1 (21.9 to 38.3) |
| OB/GYN | 12008 (7.0) | 3539 (29.5) | 32350 (3.2) | 18998 (58.7) | 29.3 (28.3 to 30.2) |
| Ophthalmology | 1537 (0.9) | 568 (37.0) | 2395 (0.2) | 1272 (53.1) | 16.2 (13.0 to 19.3) |
| Oral surgery | 344 (0.2) | 92 (26.7) | 8452 (0.8) | 6215 (73.5) | 46.8 (42.0 to 51.6) |
| Orthopedics | 2876 (1.7) | 983 (34.2) | 31270 (3.1) | 16408 (52.5) | 18.3 (16.5 to 20.1) |
| Otolaryngology | 1116 (0.7) | 161 (14.4) | 12692 (1.2) | 5648 (44.5) | 30.1 (27.8 to 32.3) |
| Pathology | 1107 (0.6) | 76 (6.9) | 2269 (0.2) | 451 (19.9) | 13.0 (10.8 to 15.2) |
| Pediatrics | 22145 (13.0) | 7772 (35.1) | 109770 (10.8) | 56483 (51.5) | 16.4 (15.7 to 17.1) |
| Plastic surgery | 31 (0.0) | 2 (6.5) | 5910 (0.6) | 4077 (69.0) | 62.5 (53.8 to 71.3) |
| Psychiatry | 23388 (13.7) | 7563 (32.3) | 47907 (4.7) | 23311 (48.7) | 16.3 (15.6 to 17.1) |
| Rad Onc | 6579 (3.9) | 1658 (25.2) | 9760 (1.0) | 3611 (37.0) | 11.8 (10.4 to 13.2) |
| Radiology | 7343 (4.3) | 2487 (33.9) | 5761 (0.6) | 3272 (56.8) | 22.9 (21.3 to 24.6) |
EM, emergency medicine; Med/Peds, medicine/pediatrics; OB/GYN, obstetrics and gynecology; oral surgery, oral & maxillofacial surgery; Rad Onc, radiation oncology.