News Release

Juvenile inmates have more mental health hospitalizations, Stanford study finds

Peer-Reviewed Publication

Stanford Medicine

Juvenile inmates are much more likely to be hospitalized for mental health problems than children and teenagers who are not incarcerated, according to a new study from the Stanford University School of Medicine.

In addition, the hospital stays of these inmates are longer, suggesting that their underlying mental health problems are worse.

The new study, which will be published online July 21 in the Journal of Adolescent Health, examined almost 2 million hospitalizations of California boys and girls over a 15-year period. Mental health diagnoses were responsible for 63 percent of hospital stays by young people in the juvenile justice system, compared to 19 percent for those not in the system.

Although mental health problems have been previously documented in juvenile inmates, the study's large size and assessment of hospital stays gives new insight into the widespread nature and severity of their mental health diagnoses.

"We know young people in the juvenile justice system have a disproportionate burden of mental illness, but I was really surprised by the magnitude of the problem, because hospitalizations typically occur for very severe illness," said the study's lead author, Arash Anoshiravani, MD, clinical assistant professor of adolescent medicine. Mental-health hospital stays were even more common in detained girls than boys, he noted. "If you just looked at girls, 74 percent of their hospitalizations were for mental illnesses," he said. "That's pretty sobering."

Anoshiravani is also an adolescent medicine specialist at Lucile Packard Children's Hospital Stanford and medical director of the Santa Clara County Juvenile Custody Institutions.

The study examined all California hospital discharges between 1997 and 2011 for 11- to 18-year-old kids. Data on non-California residents were excluded, leaving 1.9 million hospitalizations. Of these, 11,367 were for patients who had come from or were being discharged to a juvenile detention facility.

Types of mental-health diagnoses

Hospitalized juvenile inmates were older, more likely to be male, to be African-American, to be from larger urban counties and to have public health insurance than their non-incarcerated counterparts.

Median hospital stays were about one day longer for inmates than noninmates (six compared with five days). However, for certain categories of hospitalization, the gap in length of stay was much greater: Teens and children transferred to substance-abuse treatment facilities had a median stay of as long as 71 days if they were in the juvenile justice system, versus 28 days for nondetained young people. Because more juvenile inmates are publicly insured, these longer stays increase public expenditure, too.

The types of mental health diagnoses did not differ much between the groups: Depressive disorders, substance abuse and conduct disorders were the most common mental health problems in both groups, with conduct disorders occurring somewhat more often in detained youth. The types of diagnoses suggest that many incarcerated teens' mental health problems developed in response to stressful and traumatic childhood experiences, such as being abused or witnessing violence, Anoshiravani said.

"They're regular kids who have had really, really horrible childhoods," he said, adding that he hopes the new data will motivate social change around the problem.

"We are arresting kids who have mental health problems probably related to their experiences as children," he said. "Is that the way we should be dealing with this, or should we be getting them into treatment earlier, before they start getting caught up in the justice system?"


Other Stanford-affiliated authors of the paper are Olga Saynina, social science research assistant; Lisa Chamberlain, MD, associate professor of pediatrics; Lynne Huffman, MD, associate professor of pediatrics; Ewen Wang, MD, professor of surgery; and Paul Wise, MD, professor of pediatrics.

The work was funded by an early career investigator award from Stanford's Child Health Research Institute, of which Chamberlain, Huffman and Wise are members.

More information about Stanford's Department of Pediatrics, which also supported the work, is available at

The Stanford University School of Medicine consistently ranks among the nation's top medical schools, integrating research, medical education, patient care and community service. For more news about the school, please visit The medical school is part of Stanford Medicine, which includes Stanford Health Care and Lucile Packard Children's Hospital Stanford. For information about all three, please visit

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