Table 2.
All drugs | Generic drugs | Brand-name drugs | |||||||
---|---|---|---|---|---|---|---|---|---|
Follow-up Year (2009) | Control | Study | p-value | Control | Study | p-value | Control | Study | p-value |
Medication use | |||||||||
Number of prescriptions | 38.6 | 38.0 | 0.97 | 22.0 | 23.0 | 0.08 | 16.6 | 15.0 | 0.04* |
Total days supply | 1374 | 1362 | 0.67 | 768 | 815 | 0.02* | 606 | 547 | 0.049* |
Total drug cost, $ | |||||||||
Per year | 4131 | 3800 | 0.11 | 861 | 890 | 0.29 | 3270 | 2910 | 0.049* |
Per 30-day supply | 90 | 83 | 0.003* | 36 | 34 | 0.02* | 159 | 152 | 0.08 |
Out-of-pocket cost, $ | |||||||||
Per year | 545 | 504 | 0.18 | 127 | 134 | 0.03* | 418 | 370 | 0.07 |
Per 30-day supply | 12 | 11 | 0.01* | 6 | 5 | 0.02* | 21 | 20 | 0.03* |
*Statistically significant at p < 0.05
aMultivariate analyses SAS Proc Mixed 9.4 comparing Control (n = 3061) vs. Study patients (n = 2822), controlling for clustering by provider and controlling for provider specialty. Standard deviations for Follow-up medication use and cost in 2009 are available in Additional file 1: Appendix 2.