TABLE 4.

Cost-Related Medication Restriction Reported at Year T and Death at Each of Next Four Survey Waves^* (Age 51–85)

	Bivariate	Control I	Control I + II
T + 1 (N = 19,651)
Odds ratio	1.00 (0.82–1.22)	1.13 (0.92–1.39)	0.92 (0.75–1.13)
Predicted probability
Not restrictor	10.7%	9.2%	8.6%
Restrictor	10.6%	10.4%	8.0%
T + 2 (N = 15,554)
Odds ratio	0.99 (0.80–1.22)	1.09 (0.88–1.36)	0.89 (0.72–1.10)
Predicted probability
Not restrictor	19.3%	17.2%	16.5%
Restrictor	19.1%	18.6%	14.9%
T + 3 (N = 11,142)
Odds ratio	1.08 (0.89–1.31)	1.20 (0.97–1.48)	0.96 (0.77–1.19)
Predicted probability
Not restrictor	27.5%	25.7%	25.1%
Restrictor	29.0%	29.4%	24.3%
T + 4 (N = 6245)
Odds ratio	1.05 (0.82–1.34)	1.23 (0.94–1.62)	0.94 (0.72–1.22)
Predicted probability
Not restrictor	34.7%	34.4%	34.6%
Restrictor	35.9%	39.3%	33.1%

Logistic models are used to estimate odds ratio and obtain predicted probabilities of death.

Control I includes respondent’s age, gender, race, education, living arrangement and net worth in 1998. Control II includes number of cardiovascular comorbidities, presence of psychiatric diagnosis, and self-reported health status in 1998.

^*This number of observations comes from 6153 respondents who met the following criteria: (i) age 51–85 in 1998; (ii) at least one cardiovascular disease in 1998; (iii) non-missing covariates in 1998; (iv) non-missing values for variable of cost-related medication underuse during 1998–2004; and (v) non-missing outcome variables in 2000–2006.