Calculating Adherence Percentage by gdf57j

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									                        Calculating Adherence Percentage


Formula for calculating adherence percentage:


Total # of pills provided at previous visit - # pills remaining

----------------------------------------------------------------------------------------- X 100

        # pills instructed to take daily x # days since last visit




Table for determining adherence percentage:

(Assuming monthly visits with a window of 7 days; 1 pill qd; 33 pills dispensed)


                                    Adherence Percentage

         # of Pills                          # of Days Since Last Visit
        Remaining         27        28         29       30       31           32          33
             0                                                                           100
             1                                                                100         97
             2                                                     100         97         94
             3                                           100        97         94         91
             4                                100         97        94         91         89
             5                     100         97         94        91         89         85
             6           100        97         94         91        89         85         82
             7            96        93         90         87        84         81         79
             8            93        89         86         83        81         78         76
             9            89        86         83         80        77         75         73
            10            85        82         79         77        74         72         70

            33            0          0          0          0         0          0         0




Research Coordinator Orientation, University of Pittsburgh, 2002

								
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