TABLE 2.

Overall changes in cost-related nonadherence and spending less on basic needs following Part D implementation among community-dwelling Medicare beneficiaries^a

Outcome measure	Odds Ratio 2005 vs. 2004 OR (95% CI)	Odds Ratio 2006 vs. 2005 OR (95% CI)	Ratio of ORs: 2006-2005 vs. 2005-2004 (95% CI)	P-value for Ratio of ORs
Cost-related nonadherence	0.91 (0.83, 0.99)	0.78 (0.71, 0.86)	0.85 (0.74, 0.98)	0.030
Spent less on basic needs	1.07 (0.94, 1.21)	0.63 (0.55, 0.72)	0.59 (0.48, 0.72)	0.000

Abbreviations: OR, odds ratio; CI, confidence interval

^aN=43,011 observations, 23,792 respondents for CRN; 42,923 observations, 23,776 respondents for spending less. Models adjusted for number of years’ participation in MCBS, sex, age group, income level, race, general health status, and number of morbidities, as defined in Table 1. All covariates were statistically significant in both models at the p=0.05 level, except “other” race (white= reference category) in both models, and 2^nd and 3^rd year of MCBS participation (4^th=reference category) in CRN model. All results weighted to national population.