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Table 3

Change in risky metformin-prescribing events

AllIntervention group
ABC
Metformin fill among those with a prior serum creatinine test ≥1.5 mg/dl (n264 77 100 87 
    12 months preintervention (%) 13.8 6.4 14.8 19.3 
    12 months postintervention (%) 6.7 6.4 4.8 9.0 
    Change in metformin fill rate (%) −7.1 −10.0 −10.3 
    Time P = 0.002 Condition P = 0.23 Time-by-condition P = 0.08   
Metformin fill following a CHF diagnosis (n259 73 107 79 
    12 months preintervention (%) 16.6 15.8 15.3 19.0 
    12 months postintervention (%) 12.6 16.4 11.6 10.5 
    Change in metformin fill rate (%) −4.0 +0.6 −3.7 −8.5 
    Time P = 0.11 Condition P = 0.88 Time-by-condition P = 0.36   
AllIntervention group
ABC
Metformin fill among those with a prior serum creatinine test ≥1.5 mg/dl (n264 77 100 87 
    12 months preintervention (%) 13.8 6.4 14.8 19.3 
    12 months postintervention (%) 6.7 6.4 4.8 9.0 
    Change in metformin fill rate (%) −7.1 −10.0 −10.3 
    Time P = 0.002 Condition P = 0.23 Time-by-condition P = 0.08   
Metformin fill following a CHF diagnosis (n259 73 107 79 
    12 months preintervention (%) 16.6 15.8 15.3 19.0 
    12 months postintervention (%) 12.6 16.4 11.6 10.5 
    Change in metformin fill rate (%) −4.0 +0.6 −3.7 −8.5 
    Time P = 0.11 Condition P = 0.88 Time-by-condition P = 0.36   
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