The level of mental state incidents dealt with by police and the police resource involved is under-researched, often giving rise to un-evidenced claims around demand, response and resources. The 2019 National Police Chiefs' Council and College of Policing definition of such incidents provides a useful basis for more accurate calculation: ‘Any police incident thought to relate to someone's mental health where their vulnerability is at the centre of the incident or where the police have had to do something additionally or differently because of it’.

中文翻译：

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与心理健康相关的警察事件：英格兰和威尔士的全国人口普查结果

警察和所涉及的警察资源处理的精神状态事件的水平没有得到充分研究，通常会导致围绕需求、响应和资源的未经证实的说法。2019 年国家警察局长委员会和警务学院对此类事件的定义为更准确的计算提供了有用的基础：“任何被认为与某人的心理健康相关的警察事件，其中他们的脆弱性处于事件的中心，或者警察已经因为它而不得不额外或不同地做一些事情'。