Cost–benefit analysis of a distracted pedestrian intervention

Cost–benefit analysis of a distracted pedestrian intervention
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行人分心干预的成本效益分析

DOI:
10.1136/ip-2022-044740
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发表时间:
2022
期刊:
影响因子:
3.7
通讯作者:
Sen, Bisakha
Sen, Bisakha
中科院分区:
医学2区
文献类型:
--
作者:
Rahim, Md Jillur;Schwebel, David C;Hasan, Ragib;Griffin, Russell;Sen, Bisakha

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手机的普及增加了行人的分心行为,并导致行人受伤率上升。大规模实施预防方案的一个主要障碍是无法获得关于潜在货币收益的信息。我们评估了StreetBit的净经济社会效益,StreetBit是一个通过从十字路口安装的蓝牙信标向分心行人的智能手机发送警告来减少分心行人行为的计划。方法使用以下三个数据源:(1)来自亚拉巴马电子碰撞报告系统的致命、严重、非严重行人受伤率;(2)来自CDC的每个致命、严重、非严重行人受伤的预期成本,包括医疗成本、统计生命价值、工作损失成本、生活质量成本;(3)来自现有文献的步行分心的患病率。我们计算并比较了亚拉巴马分心行走的估计货币成本和实施StreetBit以减少十字路口行人受伤的货币收益。在2019-2021年期间,亚拉巴马州平均每年有31人在交叉路口受伤,83人受伤,115人受伤。预期费用/伤害分别为1100万美元、339535美元和93877美元。和StreetBitdemonstrates 19.1%(95%CI 1.6%至36.0%)降低。这些数字表明,通过StreetBitstate等干预措施,潜在的年成本节约范围从1810万美元到2900万美元。潜在成本范围从3208600美元(每四个城市交叉路口设置一个信标)到美国6359200(每一个交叉路口)。结论即使在最简约的情景下(25%的行人分心;密集的信标放置),StreetBits估计每年为社会带来1180万美元的净效益。可以利用现有的数据源来预测像StreetBit这样的分心行人干预的净货币收益,并促进大规模干预的采用。
Objective Cellphone ubiquity has increased distracted pedestrian behaviour and contributed to growing pedestrian injury rates. A major barrier to large-scale implementation of prevention programmes is unavailable information on potential monetary benefits. We evaluated net economic societal benefits of StreetBit, a programme that reduces distracted pedestrian behaviour by sending warnings from intersection-installed Bluetooth beacons to distracted pedestrians’ smartphones. Methods Three data sources were used as follows:(1) fatal, severe, non-severe pedestrian injury rates from Alabama’s electronic crash reporting system;(2) expected costs per fatal, severe, non-severe pedestrian injury—including medical cost, value of statistical life, work-loss cost, quality-of-life cost—from CDC and (3) prevalence of distracted walking from extant literature. We computed and compared estimated monetary costs of distracted walking in Alabama and monetary benefits from implementing StreetBit to reduce pedestrian injuries at intersections. Results Over 2019–2021, Alabama recorded an annual average of 31 fatal, 83 severe and 115 non-severe pedestrian injuries in intersections. Expected costs/injury were US 11million,US 339 535 and US 93877,respectively.Theestimateddistractedwalkingprevalenceis25%–40%,andStreetBitdemonstrates19.1%(95%CI1.6%to36.0%)reduction.ThesefiguresdemonstratepotentialannualcostsavingsfromusinginterventionslikeStreetBitstatewiderangingfromUS 18.1 to US 29million.PotentialcostsrangefromUS 3 208 600 (beacons at every-fourth urban intersection) to US 6359200(everyotherintersection).ConclusionsEvenunderthemostparsimoniousscenario(25%distractedpedestrians;densestbeaconplacement),StreetBityieldsUS 11.8 million estimated net annual benefit to society. Existing data sources can be leveraged to predict net monetary benefits of distracted pedestrian interventions like StreetBit and facilitate large-scale intervention adoption.
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