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Table 3 Difference in the daily expense on 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 -0.16** (-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
  1. ** p < 0.01; * p < 0.05; p < 0.1.