Self-restriction of medications due to cost in seniors without prescription coverage.

TitleSelf-restriction of medications due to cost in seniors without prescription coverage.
Publication TypeJournal Article
Year of Publication2001
AuthorsSteinman, MA, Sands, L, Covinsky, KE
JournalJ Gen Intern Med
Date Published2001 Dec
ISSN Number0884-8734
Call Numberpubs_2001_Steinman_MJGenIntMed.pdf
KeywordsAged, Aged, 80 and over, Cohort Studies, Cross-Sectional Studies, Female, Humans, Insurance, Pharmaceutical Services, Male, Prescription Fees, Risk Factors, Socioeconomic factors, Treatment Refusal, United States

OBJECTIVE: Little is known about patients who skip doses or otherwise avoid using their medications because of cost. We sought to identify which elderly patients are at highest risk of restricting their medications because of cost, and how prescription coverage modifies this risk.

DESIGN AND PARTICIPANTS: Cross-sectional study from the 1995-1996 wave of the Survey of Asset and Health Dynamics Among the Oldest Old, a population-based survey of Americans age 70 years and older.

MEASUREMENTS: Subjects were asked the extent of their prescription coverage, and whether they had taken less medicine than prescribed for them because of cost over the prior 2 years. We used bivariate and multivariate analyses to identify risk factors for medication restriction in subjects who lacked prescription coverage. Among these high-risk groups, we then examined the effect of prescription coverage on rates of medication restriction.

MAIN RESULTS: Of 4,896 seniors who regularly used prescription medications, medication restriction because of cost was reported by 8% of subjects with no prescription coverage, 3% with partial coverage, and 2% with full coverage (P <.01 for trend). Among subjects with no prescription coverage, the strongest independent predictors of medication restriction were minority ethnicity (odds ratio [OR], 2.9 compared with white ethnicity; 95% confidence interval [95% CI], 2.0 to 4.2), annual income <$10,000 (OR, 3.8 compared with income > or =$20,000; 95% CI, 2.4 to 6.1), and out-of-pocket prescription drug costs >$100 per month (OR, 3.3 compared to costs < or =$20; 95% CI, 1.5 to 7.2). The prevalence of medication restriction in members of these 3 risk groups was 21%, 16%, and 13%, respectively. Almost half (43%) of subjects with all 3 risk factors and no prescription coverage reported restricting their use of medications. After multivariable adjustment, high-risk subjects with no coverage had 3 to 15 times higher odds of medication restriction than subjects with partial or full coverage (P <.01).

CONCLUSIONS: Medication restriction is common in seniors who lack prescription coverage, particularly among certain vulnerable groups. Seniors in these high-risk groups who have prescription coverage are much less likely to restrict their use of medications.

User Guide Notes

Endnote Keywords

Aged, 80 and Over/Cohort Studies/Cross Sectional Studies/Female/Insurance, Pharmaceutical Services/Prescription Fees/Risk Factors/Socioeconomic Factors/Support, U.S. Government--non PHS/Support, U.S. Government--PHS/Treatment Refusal

Endnote ID


Alternate JournalJ Gen Intern Med
Citation Key6741
PubMed ID11903757
PubMed Central IDPMC1495305
Grant ListK02 HS000006 / HS / AHRQ HHS / United States
K02HS00006-01 / HS / AHRQ HHS / United States