All drugs | Generic drugs | Brand-name drugs | |||||||
---|---|---|---|---|---|---|---|---|---|
Change from 2007 to 2009 | Control | Study | p-value | Control | Study | p-value | Control | Study | p-value |
Medication use | |||||||||
Number of prescriptions | 3.2 | 2.7 | 0.24 | 2.1 | 1.9 | 0.43 | 1.1 | 0.8 | 0.32 |
Total days supply | 141 | 129 | 0.40 | 93 | 89 | 0.63 | 48 | 41 | 0.45 |
Total drug cost, $ | |||||||||
Per year | 792 | 584 | 0.02* | 2 | −34 | 0.053 | 790 | 619 | 0.07 |
Per 30-day supply | 9.40 | 6.08 | 0.03* | −3.42 | −5.11 | 0.065 | 30 | 25 | 0.20 |
Out-of-pocket cost, $ | |||||||||
Per year | 41 | 31 | 0.36 | 15 | 14 | 0.44 | 26 | 17 | 0.44 |
Per 30-day supply | −0.23 | −0.19 | 0.996 | 0.30 | 0.13 | 0.19 | 0.32 | −0.23 | 0.27 |