From: The impact of Medicare prescription drug coverage on the use of antidementia drugs
Group based on coverage of drugs in the insurance plan | Mean No. (SD) of pre–Part D prescriptions | Mean No. (SD) of post–Part D prescriptions | Adjusted odds ratio* of pre–Part D vs. post–Part D prescriptions | Comparison of the adjusted odds ratio* of the no-coverage, $150-cap, and $350-cap groups with that of the no-cap group | ||
---|---|---|---|---|---|---|
AOR (95% CI) | PValue | AOR (95% CI) | PValue | |||
No-coverage group | 1.61 (4.26) | 3.88 (7.04) | 2.47 (1.99-3.07) | <0.0001 | 1.80 (1.42-2.27) | <0.0001 |
$150-cap group | 1.75 (4.20) | 3.08 (5.99) | 1.77 (1.42-2.20) | <0.0001 | 1.29 (1.02-1.63) | 0.0341 |
$350-cap group | 2.34 (4.79) | 3.94 (6.86) | 1.67 (1.57-1.79) | <0.0001 | 1.22 (1.09-1.36) | 0.0004 |
No-cap group | 3.30 (6.15) | 4.66 (7.56) | 1.37 (1.26-1.50) | <0.0001 | [Reference] |