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Objective: The prevalence of mental illness among those in prison is much higher than in the community; however, very few studies have examined whether rates have changed over time, in line with increasing self-reported rates in the community. Methods: This study compares the prevalence of self-reported mental illness, self-harm and suicidal thoughts/behaviours, and drug and alcohol use across three waves (2001, 2009 and 2015) of health surveys involving men and women in New South Wales prisons and compared these rates with published community-level findings. Results: The prevalence of those reporting any mental health diagnosis increased significantly across the three surveys, even after adjustment for socio-demographic and criminal justice variables that also changed over time. Individuals surveyed in 2015 were more likely to report a mental health diagnosis than those surveyed in 2001 (adjusted odds ratio = 2.66, 95% confidence interval = [2.16, 3.27]). The prevalence of self-harm and suicidal thoughts and behaviours remained stable across the three surveys, while self-reported regular drug use decreased over the period. Women experienced a far greater burden of mental illness than men across all three surveys and experienced more growth in the prevalence of most psychiatric disorders. Conclusion: These findings have important implications for public and prison health systems given the poor social, health and criminal justice outcomes of those imprisoned with mental illness, both in custody and post-release.

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PurposeThe prison-to-community transition period is one of high risk and need, particularly for those with mental illness. Some individuals cycle in and out of prison for short periods with little opportunity for mental health stabilization or service planning either in prison or the community. This study describes the socio-demographic, clinical and criminal justice characteristics of individuals with mental illness and frequent, brief periods of imprisonment, examines continuity of mental health care between prison and the community for this group, and reports on their post-release mental health and criminal justice outcomes.Design/methodology/approachThis study examined a sample of 275 men who had recently entered prison in New South Wales (NSW), Australia, who had been charged with relatively minor offenses and had been identified on reception screening as having significant mental health needs. Baseline demographic and mental health information was collected via interview and file review and contacts with the prison mental health service were recorded for the period of incarceration. Follow-up interviews were conducted 3 months post-release to determine level of health service contact and mental health symptoms. Information on criminal justice contact during the 3 month period was also collected.FindingsThe majority (85.5%) of the sample had contact with a mental health professional during their period of incarceration. Mental health discharge planning was, however, lacking, with only one in 20 receiving a referral to a community mental health team (CMHT) and one in eight being referred for any kind of mental health follow-up on release. Of those followed up 3 months post-release (n = 113), 14.2% had had contact with a CMHT. Of those released for at least 3 months (n = 255), one in three had received new charges in this period and one in five had been reincarcerated.ConclusionContinuity of mental health care for those exiting prison is poor, particularly for those with mental health needs experiencing brief periods of imprisonment, and rates of CMHT contact are low in the immediate post-release period. These findings suggest a need for early identification of individuals in this group for timely commencement of intervention and release planning, and opportunities for diversion from prison should be utilized where possible.