FIG 2.

Suboptimal therapy delivery and stock-out metrics. C1D1 represents cycle 1 day 1, and C2D2 represents cycle 2 day 2 of a given regimen. C1D1 to C2D1 represents the cycle interval between cycles 1 and 2. The numbered scenarios represent different ways in which stock out can occur during a given cycle: (1) midinterval stock out; (2) stock out occurring before and extending during the cycle interval; (3) stock out occurring during the cycle and extending post cycle interval; (4) stock out occurring prior to the cycle; (5) stock out occurring after the cycle; and (6) stock out affecting the entire duration of the cycle interval.