Centre for Trauma Sciences, Queen Mary University of London, London, UK.
London Ambulance Service NHS Trust, London, UK.
BMJ Open. 2018 Nov 6;8(10):e023114. doi: 10.1136/bmjopen-2018-023114.
To describe the epidemiology of assaults resulting in stab injuries among young people. We hypothesised that there are specific patterns and risk factors for injury in different age groups.
Eleven-year retrospective cohort study.
Urban major trauma centre in the UK.
1824 patients under the age of 25 years presenting to hospital after a stab injury resulting from assault.
Incident timings and locations were obtained from ambulance service records and triangulated with prospectively collected demographic and injury characteristics recorded in our hospital trauma registry. We used geospatial mapping of individual incidents to investigate the relationships between demographic characteristics and incident timing and location.
The majority of stabbings occurred in males from deprived communities, with a sharp increase in incidence between the ages of 14 and 18 years. With increasing age, injuries occurred progressively later in the day (r=0.66, p<0.01) and were less frequent within 5 km of home (r=0.59, p<0.01). Among children (age <16), a significant peak in injuries occurred between 16:00 and 18:00 hours, accounting for 22% (38/172) of injuries in this group compared with 11% (182/1652) of injuries in young adults. In children, stabbings occurred earlier on school days (hours from 08:00: 11.1 vs non-school day 13.7, p<0.01) and a greater proportion were within 5 km of home (90% vs non-school day 74%, p=0.02). Mapping individual incidents demonstrated that the spike in frequency in the late afternoon and early evening was attributable to incidents occurring on school days and close to home.
Age, gender and deprivation status are potent influences on the risk of violent injury in young people. Stab injuries occur in characteristic temporal and geographical patterns according to age group, with the immediate after-school period associated with a spike in incident frequency in children. This represents an opportunity for targeted prevention strategies in this population.
描述导致年轻人刺伤的袭击事件的流行病学。我们假设不同年龄组的伤害存在特定的模式和危险因素。
回顾性十一年队列研究。
英国城市大型创伤中心。
1824 名年龄在 25 岁以下因袭击导致刺伤后到医院就诊的患者。
从救护车服务记录中获取事件时间和地点，并与我院创伤登记处前瞻性收集的人口统计学和损伤特征进行三角测量。我们使用个体事件的地理空间映射来调查人口统计学特征与事件时间和地点之间的关系。
大多数刺伤发生在来自贫困社区的男性中，14 至 18 岁之间的发病率急剧上升。随着年龄的增长，受伤时间逐渐推迟（r=0.66，p<0.01），离家 5 公里以内的受伤频率也降低（r=0.59，p<0.01）。在儿童（年龄<16 岁）中，16：00 至 18：00 之间发生的伤害显著增加，占该组 22%（38/172）的伤害，而在年轻成人中占 11%（182/1652）。在儿童中，刺伤发生在上学日较早的时间（从 08：00 开始的时间为 11.1 小时，而非上学日为 13.7 小时，p<0.01），离家更近的比例更大（90%对非上学日的 74%，p=0.02）。个体事件的映射表明，下午晚些时候和傍晚早些时候频率的上升归因于上学日和离家较近的事件发生。
年龄、性别和贫困状况是年轻人暴力伤害风险的重要影响因素。刺伤事件根据年龄组呈现出特定的时间和地理模式，儿童群体在放学后立即出现事件频率上升。这为该人群提供了有针对性的预防策略的机会。
