Table 2.
Drug product | Overall (95% CI) | Authorized generic switchers (95% CI) | Generic switchers (95% CI) | Incidence rate difference (95% CI) | Incidence rate ratios (95% CI) |
---|---|---|---|---|---|
Alendronate tablets | 3.8 (3.4 to 4.2) | 3.2 (2.4 to 4.2) | 3.9 (3.5 to 4.3) | −0.7 (−1.7 to 0.3) | 0.82 (0.61 to 1.10) |
Amlodipine tablets | 4.8 (4.6 to 5.1) | 4.3 (4.0 to 4.7) | 5.2 (4.9 to 5.6) | −0.9 (−1.4 to −0.4) | 0.83 (0.75 to 0.92) |
Amlodipine-benazepril capsules | 17.8 (17.0 to 18.6) | 12.8 (10.6 to 15.4) | 18.3 (17.4 to 19.1) | −5.4 (−7.9 to −3.0) | 0.70 (0.58 to 0.84) |
Escitalopram tablets | 13.8 (13.2 to 14.5) | 13.4 (12.7 to 14.1) | 15.6 (14.1 to 17.2) | −2.2 (−3.9 to −0.5) | 0.86 (0.77 to 0.96) |
Glipizide extended release tablets | 7.8 (7.1 to 8.5) | 6.5 (5.7 to 7.3) | 9.5 (8.4 to 10.7) | −3.0 (−4.4 to −1.7) | 0.68 (0.57 to 0.81) |
Quinapril tablets | 4.7 (4.4 to 5.2) | 3.2 (2.7 to 3.7) | 6.0 (5.5 to 6.7) | −2.9 (−3.7 to −2.1) | 0.52 (0.43 to 0.63) |
Sertraline tablets | 9.2 (8.8 to 9.6) | 8.1 (7.5 to 8.7) | 10.1 (9.5 to 10.7) | −2.0 (−2.8 to −1.2) | 0.80 (0.73 to 0.88) |
Overall | 8.2 (8.1 to 8.4) | 7.4 (7.2 to 7.6) | 8.9 (8.6 to 9.1) | −1.5 (−1.8 to −1.1) | 0.83 (0.80 to 0.87) |