Table 3.

Percent Nonadherence Observed over Various Definitions of Nonadherence

	Definition of Non-Adherence
	CMG <10%	CMG <20%	CMG <30%
	Percent Meeting Nonadherent Definition
Prevention category
Secondary	56.0	38.8	26.7
Primary	56.4	37.8	28.0
Range of mean prescription copay *
<$10	49.3	28.6	22.2
$10 to <$20	60.0	39.7	28.4
$20+	76.2	59.4	45.1
Overall	56.2	38.3	27.3

^*  χ²P < .001 within each definition of nonadherence. CMG, cumulative multiple refill-interval gap.