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In the past 20 years, the number of people committing suicide after being discharged from non-psychiatric hospitals has dropped by 50%.

This is according to a new study by medical researchers, who found that the聽rates of suicide in people who are discharged from non-psychiatric hospitals after presenting there with suicidal thoughts or behaviours (such as self-harm) have halved in the past two decades.

The researchers鈥� meta-analysis 鈥� published in academic journal 鈥� looked at 115 studies that were conducted over more than half a century and included over 248,000 patients.

The exact reasons for the decline are unclear, but clinical psychiatrist and UNSW Medicine Conjoint Professor Matthew Large said the findings are likely connected to changing attitudes in emergency departments and increased mental health resources in these settings.

鈥淚n the past people who presented to emergency departments with suicidal thoughts or behaviours did not necessarily get the treatment they needed. There were sometimes seen to be interfering with the main function of emergency rooms, which is to treat sick and injured people.

鈥淗owever, in the last 20 years there has been an increasing realisation that those people have just as legitimate a claim on health resources as people presenting with other common medical conditions such as asthma and chest pain.鈥�

Dr Large said that there has been a worldwide recognition that emergency departments present an opportunity for suicide prevention through assessing and managing people who are so distressed that they self-harm in some way.

鈥淭his study suggests is that the increased resources and attention paid to these patients over the years seems to have paid off very well, likely because a larger proportion of people who present with suicidal thoughts and behaviours are getting specialist mental health treatment.鈥�

The authors said that there remains a large amount of unmet demand for psychosocial assessment and intervention in emergency departments, followed by quality, patient-centred care.

鈥淲e now know that what we鈥檝e been doing is increasingly working 鈥� but although the suicide rate of these patients has declined, it鈥檚 still 30 times higher than the rate of the general community, so there鈥檚 much to do still,鈥� Dr Large said.

Global suicide rates have declined quite dramatically in the last 20 years, mostly due to a decline in rates in low- and middle-income countries. However, the studies included in this analysis came from high-income countries where community suicide rates have been stable or have even increased.

The team observed disparities between countries in their analysis.聽鈥淪tudies conducted in Asia, for example, where psychiatric services are less well developed, showed that suicide rates are higher. In the UK, where community services are well developed, there are lower suicide rates.

鈥淎ustralia鈥檚 rates were consistent with the overall results 鈥� but we need to do a bit more research. It鈥檚 surprising that there鈥檚 only a modest amount of data available from here, despite Australia鈥檚 good track record in suicide research.鈥�

The second important finding in the analysis was that the suicide rates of people who were experiencing suicidal thoughts or behaviours and were then discharged from non-psychiatric hospitals is extremely similar to the suicide rate of people discharged from psychiatric hospitals.

鈥淭hat鈥檚 an important finding because often, much fewer resources are devoted to people who are discharged from emergency departments or general hospitals, rather than psychiatric settings.鈥�

Lastly, the paper also showed a positive finding when it comes to young people.

鈥淚 was surprised by how strikingly low the suicide rate among people under 25 was.

鈥淵oung people are the most likely to turn up in an emergency department with suicidal thoughts and behaviours and it鈥檚 reassuring that they don鈥檛 have an extraordinary suicide risk,鈥� Professor Large concluded.

Image credit: 漏stock.adobe.com/au/Kwest