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Table 4 Cost-benefit analysis of pharmacist interventions in different expenditure types

From: Clinical and economic impact of pharmacist interventions on sampled outpatient prescriptions in a Chinese teaching hospital

  2011 2012 2013 2014 2015 2016
Prescription at self payment
 Number of inappropriate prescription 905 720 450 204 116 114
 Cost of inappropriate prescription(Dollar)a 20,532 17,053 14,103 6730 3844 4212
 Cost of pharmacist time(Dollar)b 2601 2971 3341 3481 3596 3540
 Benefit-to-cost ratio c 7.89 5.74 4.22 1.93 1.07 1.19
Prescription at public payment
 Number of inappropriate prescription 229 171 107 44 28 27
 Cost of inappropriate prescription(Dollar)a 6624 5701 4231 2086 1001 954
 Cost of pharmacist time(Dollar)b 510 540 589 530 572 585
 Benefit-to-cost ratio c 13.00 10.56 7.18 3.94 1.75 1.63
Prescription at insurance payment
 Number of inappropriate prescription 711 571 359 190 102 97
 Cost of inappropriate prescription(Dollar)a 16,344 13,964 11,293 6538 3878 3812
 Cost of pharmacist time(Dollar)b 1873 2155 2422 2976 3505 3743
 Benefit-to-cost ratio c 8.73 6.48 4.66 2.20 1.11 1.02
  1. aCost of inappropriate prescription in each expenditure type = the sum of costs of inappropriate items of this type;
  2. bWe supposed that each prescription took the pharmacist the same time. The time each prescription consumed = (Total pharmacist time)/ (Number of reviewed prescriptions)(see Table 4 and Table 1); Pharmacist time spend on each expenditure type = (The time each prescription consumed)* (Prescription number of this type)(see Table 1); Cost of pharmacist time = (Pharmacist time spend on each expenditure type)* (Hourly salary)(see Table 4);
  3. cBenefit-to-cost ratio = (Cost of inappropriate prescription in each expenditure type)/(Total cost of pharmacist time);
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