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Table 2 Unadjusted percent preferred medication tier in each of three user groups in each of three time periods

From: Effect of electronic prescribing with formulary decision support on medication tier, copayments, and adherence

User Group/Time period

Prior to FDS

E-prescribing with non-interruptive FDS only

E-prescribing with interruptive and non-interruptive FDS

p-value*

Percent Preferred Tier

Non user PCPs

63%

69%

70%

<0.0001

Low user PCPs (<30%)

59%

60%

61%

0.87

High user PCPs (>30%)

57%

61%

78%

<0.001

All PCPs

62%

67%

69%

<0.001

p-value

<0.01

0.19

<0.001

 
  1. *p-values are for comparisons within user groups across time and within each time period across user groups.