Table 1.

Preliminary and revised categories of nonadherence behaviors

Survey 1 (N = 24)	Survey 2 (N = 22)
Non-Initiation	Non-Initiation
• Not filling the initial medication (96%) • Not taking the first pill (88%)	• Not filling the initial medication • Not taking the first pill
Incorrect Implementation	Incorrect Implementation
• Missing doses (100%) • Taking extra doses (92%) • Taking doses at the wrong time (83%) • Refilling the medication late or not at all (92%) • Stockpiling medication defined as obtaining refills when large supplies were already on hand (58%) • Improperly administering medications, leading to incorrect dose (e.g., improper asthma inhaler technique, or failure to take levothyroxine with food) or increased risk for side effects (e.g., lying down after taking oral bisphosphonate) (92%)	• Missing doses • Taking extra doses • Taking doses at the wrong time • Refilling the medication late or not at all • Stockpiling medication (i.e., obtaining refills when large supplies were already on hand) • Improperly administering medications, leading to incorrect dose (e.g., improper asthma inhaler technique, or failure to take levothyroxine with food) or increased risk for side effects (e.g., lying down after taking oral bisphosphonate)
Non-Persistence	Non-Persistence
• Discontinuing the medication prior to the date recommended by the prescribing clinician (96%)	• Discontinuing the medication prior to the date recommended by the prescribing clinician

Survey respondents were asked whether each of the behaviors should be included or excluded from our framework. In survey 1, percent agreement with inclusion of each nonadherence behavior is provided in parentheses; consensus with classification was viewed as present if >70% of respondents agreed with inclusion. In survey 2, percent agreement with changes made to survey is provided in parentheses in right column).