Abstract：
BACKGROUND: Our previous work demonstrated that use of ShotSpotter (SS), a gunfire detection system, and use of police department (PD) transport decreased response and transport time for gunshot wound (GSW) victims versus events with non-ShotSpotter (NSS). The purpose of this study was to evaluate transport trends and how they are linked to SS in the period of 2016-2021 in Camden, NJ.
METHODS: This was a single-center, retrospective observational study. Demographics, response time, transport time, and clinical data were collected. Independent t-test, Mann-Whitney U test, chi-squared test, and linear regression to correct for transport time and method of transport were used to compare outcomes (P < 0.05).
RESULTS: A total of 267 GSWs were included: 77 emergency medical technicians (EMS)-SS, 41 EMS-NSS, 116 PD-SS, and 33 PD-NSS. When comparing response from 2016 to 2021, PD improved from 4 to 2 min (P = 0.001). EMS improved from 6.4 min (EMS-NSS) and 4.5 min (EMS-SS) to 5 min (EMS- NSS) and 4 min (EMS-SS) (P = 0.281). In addition, PD transport times, 5 min (SS) and 4 min (NSS), were faster than EMS, 9 min (SS and NSS) (P < 0.001). Overall PD transport volume increased with a peak in 2020 (68.3%). There was also an increase in PD-NSS transport 4% to 37.9% (P < 0.001). EMS-SS transport decreased from 54.7% to 6.9% (P < 0.001).
CONCLUSIONS: The presence of SS technology in a small urban setting continues to be associated with a higher rate of PD transport of GSW victims. The critical time of dispatch and transport for both PD and EMS has shown durable improvement.
METHODS: This was a single-center, retrospective observational study. Demographics, response time, transport time, and clinical data were collected. Independent t-test, Mann-Whitney U test, chi-squared test, and linear regression to correct for transport time and method of transport were used to compare outcomes (P < 0.05).
RESULTS: A total of 267 GSWs were included: 77 emergency medical technicians (EMS)-SS, 41 EMS-NSS, 116 PD-SS, and 33 PD-NSS. When comparing response from 2016 to 2021, PD improved from 4 to 2 min (P = 0.001). EMS improved from 6.4 min (EMS-NSS) and 4.5 min (EMS-SS) to 5 min (EMS- NSS) and 4 min (EMS-SS) (P = 0.281). In addition, PD transport times, 5 min (SS) and 4 min (NSS), were faster than EMS, 9 min (SS and NSS) (P < 0.001). Overall PD transport volume increased with a peak in 2020 (68.3%). There was also an increase in PD-NSS transport 4% to 37.9% (P < 0.001). EMS-SS transport decreased from 54.7% to 6.9% (P < 0.001).
CONCLUSIONS: The presence of SS technology in a small urban setting continues to be associated with a higher rate of PD transport of GSW victims. The critical time of dispatch and transport for both PD and EMS has shown durable improvement.
摘要：
背景：我们以前的工作表明，使用ShotSpotter（SS），枪声探测系统,与非ShotSpotter（NSS）事件相比，使用警察局（PD）运输减少了枪伤（GSW）受害者的反应和运输时间。这项研究的目的是评估卡姆登2016-2021年期间的运输趋势及其与SS的联系，NJ.
方法：这是一个单中心，回顾性观察性研究。人口统计,响应时间,运输时间,收集临床资料。独立t检验,Mann-WhitneyU测试,卡方检验，用线性回归校正转运时间和转运方法比较结局(P<0.05)。
结果：总共包括267个GSW：77个紧急医疗技术人员（EMS）-SS，41EMS-NSS,116PD-SS,和33个PD-NSS。比较2016年至2021年的反应，PD从4分钟改善到2分钟（P=0.001）。EMS从6.4min（EMS-NSS）和4.5min（EMS-SS）提高到5min（EMS-NSS）和4min（EMS-SS）（P=0.281）。此外,PD传输时间,5分钟（SS）和4分钟（NSS），比EMS快，9min(SS和NSS)(P<0.001)。总PD运输量在2020年达到峰值（68.3%）。PD-NSS转运也增加了4%至37.9%(P<0.001)。EMS-SS转运率从54.7%下降到6.9%(P<0.001)。
结论：在小城市环境中，SS技术的存在继续与GSW受害者的PD转运率较高有关。PD和EMS的调度和运输的关键时间显示出持久的改善。
方法：这是一个单中心，回顾性观察性研究。人口统计,响应时间,运输时间,收集临床资料。独立t检验,Mann-WhitneyU测试,卡方检验，用线性回归校正转运时间和转运方法比较结局(P<0.05)。
结果：总共包括267个GSW：77个紧急医疗技术人员（EMS）-SS，41EMS-NSS,116PD-SS,和33个PD-NSS。比较2016年至2021年的反应，PD从4分钟改善到2分钟（P=0.001）。EMS从6.4min（EMS-NSS）和4.5min（EMS-SS）提高到5min（EMS-NSS）和4min（EMS-SS）（P=0.281）。此外,PD传输时间,5分钟（SS）和4分钟（NSS），比EMS快，9min(SS和NSS)(P<0.001)。总PD运输量在2020年达到峰值（68.3%）。PD-NSS转运也增加了4%至37.9%(P<0.001)。EMS-SS转运率从54.7%下降到6.9%(P<0.001)。
结论：在小城市环境中，SS技术的存在继续与GSW受害者的PD转运率较高有关。PD和EMS的调度和运输的关键时间显示出持久的改善。
