|
Difference in the daily expense on drugs between the pre- and the post-action periods |
||||
| Exposure group |
Comparison group |
|||
|
|
|
|||
| Coefficient |
95% CI of change measured in % |
Coefficient |
95% CI of change measured in % |
|
|
|
||||
| Beta blocking agents |
||||
| Post_Action |
-0.16** |
(-17, -12) |
0.03† |
(0, 5) |
| Test Statistic |
F (1,552) = 105.97** |
F (1,510) = 3.36† |
||
| # observations |
1106 |
1022 |
||
| # patient-hospital groups |
553 |
511 |
||
| Calcium channel blockers, vascular effects |
||||
| Post_Action |
-0.06** |
(-8, -4) |
-0.02 |
(-4, 0) |
| Test Statistic |
F (1,634) = 26.44** |
F (1,566) = 2.49 |
||
| # observations |
1270 |
1134 |
||
| # patient-hospital groups |
635 |
567 |
||
| ACE inhibitors, plain |
||||
| Post_Action |
-0.06** |
(-9, -2) |
0.01 |
(-1, 4) |
| Test Statistic |
F (1,271) = 10.69** |
F (1,287) = 0.95 |
||
| # observations |
544 |
576 |
||
| # patient-hospital groups |
272 |
288 |
||
|
** p < 0.01; * p < 0.05; † p < 0.1. | ||||
Chen et al. BMC Public Health 2008 8:118 doi:10.1186/1471-2458-8-118 |
||||