Figure 2.

Hypothetical adherence pattern over a 4-week treatment period for illustration of adherence pattern parameter computations. Total number of doses within the treatment period = 16; percent adherent doses = 16 of 28 = 57.1%; days on treatment = 27 (dotted arrow); longest/maximum days of consecutive adherence = 8 (solid arrow); longest/maximum days of consecutive missed adherence = 5 (dashed arrow); number of “switches” between on and off medication days = 9; total doses weeks 1–4 = 16; total doses weeks 5–8 = N/A; and total doses weeks 9–12 = N/A. The numbers in the cells represent days from a start day. Adherence days are indicated in green, and nonadherence days are indicated in blank. Abbreviation: N/A, not applicable.