Objectives. We examined preventive care use by nonelderly adults (aged 18–64 years) before the Affordable Care Act (ACA) and considered the contributions of insurance coverage and other factors to service use patterns.
Methods. We used data from the 2005–2010 Medical Expenditure Panel Survey to measure the receipt of 8 recommended preventive services. We examined gaps in receipt of services for adults with incomes below 400% of the federal poverty level compared with higher incomes. We then used a regression-based decomposition analysis to consider factors that explain the gaps in service use by income.
Results. There were large income-related disparities in preventive care receipt for nonelderly adults. Differences in insurance coverage explain 25% to 40% of the disparities in preventive service use by income, but education, age, and health status are also important drivers.
Conclusions. Expanding coverage to lower-income adults through the ACA is expected to increase their preventive care use. However, the importance of education, age, and health status in explaining income-related gaps in service use indicates that the ACA cannot address all barriers to preventive care and additional interventions may be necessary.The benefits of many preventive health care services are well-established.
1 In the case of immunization, for instance, those who receive the recommended services are likely to avoid a variety of life-threatening diseases while promoting herd immunity and protecting individuals who are unable to be immunized.
2 Those appropriately screened for cancer are likely to receive more timely diagnosis and treatment, which ultimately leads to better outcomes.
3 Furthermore, early detection of heart disease, diabetes, and other chronic conditions can lead to the promotion of healthier lifestyles and better management of the diseases.
4 Despite this evidence, many studies have shown the use of preventive services, including cholesterol checks, Papanicolaou (Pap) tests, mammograms, colon cancer screenings, and flu vaccines to be below recommended levels.
5–9In recent years, the growing prevalence of obesity and chronic conditions and the evidence that modifiable behaviors are among the leading causes of death have led to a renewed emphasis on promoting health and wellness as opposed to treating disease.
10,11 This emphasis on prevention was particularly evident in the national conversation leading up to the passage of the Affordable Care Act (ACA) in March 2010. Increasing access to preventive care was one motivation for expanding coverage to the uninsured, and was the explicit goal of an additional provision in the ACA requiring private insurers to cover recommended preventive services without any cost-sharing obligations to consumers. The effects of these ACA policies on preventive service use will depend on the extent to which preventive services are currently underused and whether expanding coverage will increase the receipt of these services.We examined the receipt of 8 preventive services by nonelderly adults in the years before the ACA (2005–2010), thus providing recent evidence on the extent of underuse of a variety of important services. Previous studies have found that lower rates of service use are generally associated with more limited education, low incomes, and a lack of insurance coverage
12–14; we concentrated on the disparities in service use between the lower-income adults most likely to benefit from the ACA coverage expansion and their higher-income counterparts. Using a regression-based decomposition analysis, we identified the roles of insurance coverage, education, and other factors in explaining these income-related disparities. The results provide important insights on the potential of ACA efforts to increase the use of preventive care through coverage expansion as well as on the limitations of such efforts.Our conceptual framework relies on human capital models, which suggest that the demand for medical care is derived from the demand for health.
15,16 According to such models, critical factors that are expected to affect the demand for health and medical care include age, health status, education, and rate of time preference. In some cases, the effects of these factors on demand for preventive care may be distinct from their effects on demand for treatment. In the case of age, for example, the demand for treatment, or curative care, is expected to increase with age as an individual’s health depreciates, whereas investment in preventive medical care is expected to decrease with age as the payoff period for avoiding future illness shortens.
13,17 This reflects a more general distinction between investment and consumption considerations in the demand for preventive care, which is also relevant with respect to the role of health status. From a consumption perspective, those in poor health are more likely to use preventive services, but healthy individuals and those who are future-oriented are also more likely to invest in health and preventive care.
18,19 Lastly, although the effect of education on the demand for health and health care is theoretically ambiguous,
15 considerable empirical evidence finds a positive relationship between education and prevention activities.
13,20–22Another critical consideration is the influence of insurance coverage on the demand for medical care. The direct effect of insurance is to lower the out-of-pocket cost of medical care and thus increase the demand for services. The RAND health insurance experiment provides the most rigorous evidence that this is the case,
23 but many other studies provide empirical evidence that having health insurance is associated with increased utilization of medical care.
24–27 The possibility exists, however, that because insurance coverage protects against the financial costs of adverse health events, it may reduce the incentive to invest in preventive care.
17 Despite this potential for “ex ante moral hazard,” most empirical evidence finds that those with insurance coverage use more preventive care, including blood pressure screenings, mammograms, and other cancer screenings.
28–30 Furthermore, those with more generous coverage and lower cost-sharing exhibit higher rates of preventive service use.
31–33The ACA includes several components that expand coverage and reduce cost-sharing and thus have the potential to increase the receipt of recommended preventive care. The ACA includes an optional expansion of Medicaid for those with incomes less than 138% of the federal poverty level (FPL) and federal subsidies to purchase coverage in the new health insurance exchanges for those with incomes up to 400% of the FPL. The law also includes penalties for not having health insurance coverage and enhanced enrollment and outreach efforts. When fully implemented, the ACA is expected to significantly expand coverage, particularly among adults with incomes less than 400% of the FPL.
34 Many of those becoming newly insured under the ACA are expected to experience improved access to recommended preventive services, given that these services will be included at no or low cost in exchange plans and under most Medicaid plans.In addition to the broader coverage expansions included in the ACA, the law includes new requirements for private health insurance coverage of a set preventive services rated “A” or “B” by the US Preventive Services Task Force.
35 After September 2010, many private health plans were required to cover the specified services, and to do so at no cost to members. Although coverage for some of the ACA-mandated services is already relatively common, other services, such as diet and tobacco counseling, are likely to see expanded coverage under the law.
36 Furthermore, with the notable exception of mammograms, few of the mandated services are currently required to be covered by private plans under state laws.
37 相似文献