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Home SCIENCE NEWS Social & Behavioral Science

Suicides less common in states that passed Medicaid expansion

June 15, 2022
in Social & Behavioral Science
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Although there have been steady increases over the past 20 years in the number of people nationwide who die by suicide, researchers at Washington University School of Medicine in St. Louis have found that such increases have slowed slightly in states that have implemented Medicaid expansion.

Bierut

Credit: Washington University School of Medicine

Although there have been steady increases over the past 20 years in the number of people nationwide who die by suicide, researchers at Washington University School of Medicine in St. Louis have found that such increases have slowed slightly in states that have implemented Medicaid expansion.

“Suicide is a public health problem, and our findings indicate that increasing access to health care — including mental health care — by expanding Medicaid eligibility can play an important role in addressing and reducing the distressing rise of suicide deaths in our country,” said senior investigator Laura J. Bierut, MD, the Alumni Endowed Professor of Psychiatry at Washington University. “Increased access to insurance and to health-care providers is crucial, and expanding such access nationwide may help change the direction of these continually rising numbers.”

The new findings are published June 15 in the journal JAMA Network Open.

After passage of the Affordable Care Act (ACA) in 2010, all states were required to expand their Medicaid programs to include people with incomes higher than traditionally allowed, in addition to groups that previously had not been covered — childless adults, for example. The expectation was that Medicaid expansion would significantly reduce the number of Americans without health insurance. The ACA also would provide access to mental health care because states were required to include such coverage in their Medicaid programs.

But in 2012, the U.S. Supreme Court ruled that states did not have to expand Medicaid if they chose not to. Today, 39 states have approved Medicaid expansion. The rest have not.

Deaths by suicide have increased steadily in the U.S. since 1999, with an average annual increase of about 1% from 1999 to 2006, followed by a 2% per year increase from 2006 through 2018.

The researchers tracked suicide rates in all 50 states and Washington, D.C., from 2000 through 2018, during which 553,912 people reportedly died by suicide. Although the ACA passed in 2010, states were not able to expand Medicaid eligibility until 2014, so the researchers homed in on the post-expansion years of 2015 through 2018.

They had hypothesized that better access to mental health care would come as a result of expanded Medicaid eligibility, making it possible for more people to get help when needed. That, in turn, might prevent some suicides.

The study’s joint first authors are Hetal Patel, MD, and Justin Barnes, MD, resident physicians in Washington University’s Department of Psychiatry and Department of Radiation Oncology. Working with Bierut and other colleagues, they conducted an analysis to track changes in the rate of suicides in states before and after expansion and compared those numbers to the rates in states that did not increase access to the insurance program.

From 2011 through 2013, the incidence of suicide in states that eventually expanded Medicaid was 13.94 per 100,000 people. In states that would not go on to expand Medicaid, the rate was 16.67 per 100,000. After 2014, the number rose by 2.5 suicides per 100,000 people in Medicaid expansion states. In states that did not expand access, the increase was even greater, 3.1 per 100,000, a statistically significant difference.

The data indicate that there were 0.4 fewer suicides per 100,000 people in Medicaid expansion states from 2014 through 2018, and as a result, the researchers estimated that 1,818 suicides were averted.

“Increased access to health care, including mental health care, helped to prevent hundreds of suicide deaths,” Patel said.

Added Bierut, “With the differences we see in these suicide rates, we think there must actually be significantly more treatment, as well as subsequent improvements, in mental health in the states with expanded Medicaid.”

Patel H, Barnes J, Osazuwa-Peters N, Bierut LJ. Medicaid expansion status and suicide mortality in the United States. JAMA Network Open, June 15, 2022.

This work is supported by the National Institute on Drug Abuse, the National Institute of Mental Health and the National Institute of Dental and Craniofacial Research of the National Institutes of Health (NIH). Grant numbers K12 DA041449, R25 MH112473 and K01 DE030916.

Washington University School of Medicine’s 1,700 faculty physicians also are the medical staff of Barnes-Jewish and St. Louis Children’s hospitals. The School of Medicine is a leader in medical research, teaching and patient care, and currently is No. 4 in research funding from the National Institutes of Health (NIH). Through its affiliations with Barnes-Jewish and St. Louis Children’s hospitals, the School of Medicine is linked to BJC HealthCare.



Journal

JAMA Network Open

Method of Research

Data/statistical analysis

Subject of Research

People

Article Title

Medicaid expansion status and suicide mortality in the United States.

Article Publication Date

15-Jun-2022

COI Statement

Osazuwa-Peters reported serving as a scientific adviser to Navigating Cancer. Bierut reported having a patent issued for Markers for Addiction. No other disclosures were reported.

Tags: commonexpansionMedicaidpassedstatesSuicides
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