Table 1.

Summary of the different adherence values depending on how the medication adherence is reported

Example	Unadjusted adherence (%)	“Simple” normative adherence (without numerator adjustment) (%)	“Sophisticated” normative adherence (without numerator adjustment) (%)	“Simple” normative adherence with numerator adjustment (%)	“Sophisticated” normative adherence with numerator adjustment (%)	Reasons for discrepancy
Person A	27.8	18.5	18.5	18.5	18.5	Under-prescription of inhaled therapy based on Pseudomonas status
Person B	61.1	61.1	20.4	61.1	20.4	Under-prescription of inhaled therapy based on previous intravenous antibiotic requirement
Person C	64.5	64.5	64.5	58.2	58.2	Brief period of nebulizer overuse resulted in slightly exaggerated unadjusted adherence figure