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Table 4 Difference in the number of days of prescription drugs between the pre- and the post-action periods

From: The influences of Taiwan's generic grouping price policy on drug prices and expenditures: Evidence from analysing the consumption of the three most-used classes of cardiovascular drugs

  Exposure group Comparison group
  Coefficient 95% CI of change measured in % Coefficient 95% CI of change measured in %
Beta blocking agents     
   Post_Action 0.57** (68, 86) 0.61** (73, 95)
   Test Statistic   F (1,552) = 459.97**   F (1,510) = 378.21**
   # observations   1106   1022
   # patient-hospital groups   553   511
Calcium channel blockers, vascular effects     
   Post_Action 0.52** (60, 76) 0.66** (83, 106)
   Test Statistic   F (1,634) = 418.20**   F (1,566) = 518.10**
   # observations   1270   1134
   # patient-hospital groups   635   567
ACE inhibitors, plain     
   Post_Action 0.50** (52, 78) 0.47** (49, 73)
   Test Statistic   F (1,271) = 154.52**   F (1,287) = 150.38**
   # observations   544   576
   # patient-hospital groups   272   288
  1. ** p < 0.01; * p < 0.05; p < 0.1.