Aaron Yelowitz

The Medicaid Notch, Labor Supply, and Welfare Participation: Evidence from Eligibility Expansions

I assess the impact of losing public health insurance on labor market decisions of women by examining a series of Medicaid eligibility expansions targeted toward young children. These targeted expansions severed the historical tie between AFDC and Medicaid eligibility. The reforms allowed a mothers earnings to increase without losing public health insurance for her young children. Increasing the income limit for Medicaid resulted in a decrease in AFDC participation and an increase in labor force participation among these women. The effects were large for ever married women, and negligible for never married women.

Are public housing projects good for kids

One of the goals of federal housing policy is to improve the prospects of children in poor families. But little research has been conducted into the effects of participation in housing programs on children, perhaps because it is difficult to find data sets with information about both participation and interesting outcome measures. This paper combines data from several sources in order to provide a first look at the effect of public housing projects on housing quality and the educational attainment of children. We first use administrative data from the Department of Housing and Urban Development to impute the probability that a Census household lives in a public housing project. We find that a higher probability of living in a project is associated with poorer outcomes. We then use two-sample instrumental variables (TSIV) techniques to combine information on the probability of living in a project obtained from the 1990 to 1995 Current Population Surveys, with information on outcomes obtained from 1990 Census. The instrument common to both samples is an indicator equal to one if the household is entitled to a larger housing project unit because of the sex composition of the children in the household. Families entitled to a larger unit because of sex composition are 24% more likely to live in projects. When we control for omitted variables bias using TSIV, we find that project households are less likely to suffer from overcrowding and less likely to live in high-density complexes. Project children are also 12 to 17 percentage points less likely to have been held back in school one or more grades, although this effect is confined to boys. Thus, most families do not face a tradeoff between housing quality and child outcomes -- the average project improves both.

Characteristics of Bitcoin users: an analysis of Google search data

The anonymity of Bitcoin prevents analysis of its users. We collect Google Trends data to examine determinants of interest in Bitcoin. Based on anecdotal evidence regarding Bitcoin users, we construct proxies for four possible clientele: computer programming enthusiasts, speculative investors, Libertarians, and criminals. Computer programming and illegal activity search terms are positively correlated with Bitcoin interest, while Libertarian and investment terms are not.

Public policy and health insurance choices of the elderly: evidence from the medicare buy-in program

This study provides evidence on health insurance decisions of senior citizens. Nearly all senior citizens have health insurance coverage through Medicare, but poor seniors may also qualify for Medicaid that fills many gaps in Medicare coverage. Since 1987, the Medicaid program has expanded eligibility. Using the SIPP, I find that Medicaid eligibility increased from 8.7% in 1987 to 12.4% in 1995. For every 100 elderly who became eligible, approximately 50 took up Medicaid, but more than 30 dropped private coverage, resulting in crowd-out of 60%. Crowd-out came from individuals dropping privately purchased health insurance rather than dropping employer-provided retiree health insurance. The roles of asset tests, health status, and the panel structure of the SIPP are also explored. I find that a major strength of the SIPP is in its point-in-time asset information for determining Medicaid eligibility, while the changing income and demographic information over the course of the 2-year panel adds little insight beyond cross-sectional data.

Who Gained Insurance Coverage in 2014, the First Year of Full ACA Implementation?

Abstract The most significant pieces of the Affordable Care Act (exchanges, subsidies, Medicaid expansion, and individual mandate), implemented in 2014, were associated with sizable gains in coverage nationally that were divided equally between gains in Medicaid and private coverage. These national trends mask heterogeneity in gains by state Medicaid expansion status, age, income level, and source of coverage.

Health insurance generosity and conditional coverage: Evidence from medicaid managed care in Kentucky

This paper estimates the impact of the introduction of Medicaid managed care (MMC) on the formal Medicaid participation of children. We employ a quasi-experimental approach exploiting the location-specific timing of MMC implementation in Kentucky. Using data from the March Current Population Survey from 1995-2003, our findings suggest that the introduction of MMC increases the likelihood of being uninsured and decreases formal Medicaid participation. This finding is consistent with an increase in “conditional coverage” – waiting until medical care is needed to sign up or re-enroll in Medicaid. These effects are concentrated among low-income children and absent for high-income children. We find no evidence of “crowd-in” – substituting private coverage for Medicaid. These results are robust to multiple placebo tests and imply the potential for less formal participation (i.e. more conditional coverage) among the ACA Medicaid expansion population (which is likely to be primarily covered under MMC) than is typically predicted.

Concentration and Market Structure in Local Real Estate Markets

The competitiveness of the residential real estate brokerage industry has attracted much attention. Anecdotal evidence suggests some local markets are concentrated, yet no systematic market structure study has been conducted. We collected cross-sectional data on real estate brokers in 90 diverse markets across the United States and collected longitudinal data for Louisville, Kentucky. In medium and large markets, no evidence exists that market concentration might create problems for competition. Small markets, on average, have higher Herfindahl-Hirschman Indexes than medium and large markets. The longitudinal data reveal that many small brokers sell a house or two one year and none the next year.

Does Medicaid Managed Care Help Equalize Racial and Ethnic Disparities in Utilization

Objective To estimate the impact of different forms of Medicaid managed care (MMC) delivery on racial and ethnic disparities in utilization. Data Source Longitudinal, administrative data on 101,649 children in Kentucky continuously enrolled in Medicaid between January 1997 and June 1999. Outcomes considered are monthly professional, outpatient, and inpatient utilization. Study Design We apply an intent‐to‐treat, instrumental variables analysis using the staggered geographic implementation of MMC to create treatment and control groups of children. Principal Findings The implementation of MMC reduced monthly professional visits by a smaller degree for non‐whites than whites (3.8 percentage points vs. 6.2 percentage points), thereby helping to equalize the initial racial/ethnic disparity in utilization. The Passport MMC program in the Louisville‐centered region statistically significantly reduced disparities for professional visits (closing the gap by 8.0 percentage points), while the Kentucky Health Select MMC program in the Lexington‐centered region did not. No substantive impact on disparities was found for either outpatient or inpatient utilization in either program. Conclusions We find evidence that MMC has the possibility to reduce racial/ethnic disparities in professional utilization. More work is needed to determine which managed care program characteristics drive this result.

The ”Poverty Trap” and Living Wage Laws

Advocates of living wage laws claim wage mandates will help families escape poverty by increasing family earnings beyond the poverty line. This article examines such programs and the effect a change in pay would have on taxes and benefits for low-income families in cities where living wage laws have been enacted or considered. Many families living with earnings below the poverty line take advantage of programs specifically designed to help them out of poverty. Phase-out rates of benefit programs are structured so that additional earnings from living wages largely disappear through benefit reduction and increased taxation. The living wage appears to be badly targeted and ineffective at raising comprehensive disposable income. Such vanishing benefits reduce the ability of living wage laws to reduce poverty. Nearly 75% of those affected by the living wage were not initially in poverty, and more than 40% had initial incomes at least twice the poverty line.

Physician preference for antiepileptic drug concentration testing.

A four-item questionnaire asked active U.S. members of the Child Neurology Society to value painless antiepileptic drug concentration monitoring, whether members had ordered a saliva level (the best established painless method) in the last year, and whether such levels were available. Value was quantified by time per patient that the physician would willingly expend to arrange for the test. Of 945 questionnaires sent, 544 (58%) were returned. When asked the value of a painless method for children, 286/522 (55%) reported willingness to expend 10 to 30 minutes to arrange the test; 498/522 (95%) would use a painless method if available. When asked the value of an immediate sample at home during a seizure or adverse event, a substantial majority, 370/526 (70%), would make an important donation of their own time to arrange for the sample. Only 5% would not use it. Just 2/544 respondents had obtained a painless (saliva) concentration, and merely 33/544 (6%) perceived such tests as being available. We conclude that child neurologists put a high value on painless antiepileptic monitoring. These data suggest that a painless method of measuring antiepileptic drug concentrations--especially if it could be performed at home--would fulfill an unmet need in the care of children with epilepsy.