Shepard Donald S, Halasa Yara A, Fonseca Dina M, Farajollahi Ary, Healy Sean P, Gaugler Randy, Bartlett-Healy Kristen, Strickman Daniel A, Clark Gary G
The Heller School for Social Policy and Management, Brandeis University, Waltham, Massachusetts, United States of America.
Center for Vector Biology, Rutgers University, New Brunswick, New Jersey, United States of America.
PLoS One. 2014 Oct 22;9(10):e111014. doi: 10.1371/journal.pone.0111014. eCollection 2014.
Aedes albopictus is the most invasive mosquito in the world, an important disease vector, and a biting nuisance that limits outdoor activities. Area-wide integrated pest management (AW-IPM) is the recommended control strategy. We conducted an economic evaluation of the AW-IPM project in Mercer and Monmouth Counties, New Jersey with a controlled design (AW-IPM vs. control) from 2009 through 2011. The study analyzed financial documents and staff time for AW-IPM and surveyed an average of 415 randomly chosen households in AW-IPM and control areas each fall from 2008 through 2011. Hours lost from yard and porch activities were calculated as differences between actual and potential hours of these activities in an average summer week if there had been no mosquito concerns. Net estimated benefits of AW-IPM were based on cross-over and difference-in-difference analyses. Reductions in hours lost were valued based on respondents' willingness to pay for a hypothetical extra hour free of mosquitoes spent on yard or porch activities and literature on valuation of a quality adjusted life year (QALY). The incremental cost of AW-IPM per adult was $41.18 per year. Number of hours lost due to mosquitoes in AW-IPM areas between the base year (2008) and the intervention years (2009-2011) declined by 3.30 hours per summer week in AW-IPM areas compared to control areas. Survey respondents valued this improvement at $27.37 per adult per summer week. Over the 13-week summer, an average adult resident gained 42.96 hours of yard and porch time, worth $355.82. The net benefit over the summer was $314.63. With an average of 0.0027 QALYs gained per adult per year, AW-IPM was cost effective at $15,300 per QALY gained. The benefit-cost ratio from hours gained was 8.64, indicating that each $1 spent on AW-IPM gave adults additional porch and yard time worth over $8.
白纹伊蚊是世界上最具入侵性的蚊子，是一种重要的疾病传播媒介，也是一种会叮咬人、给人带来困扰并限制户外活动的害虫。区域综合虫害管理（AW - IPM）是推荐的控制策略。我们于2009年至2011年在新泽西州的默瑟县和蒙茅斯县采用对照设计（AW - IPM组与对照组）对AW - IPM项目进行了经济评估。该研究分析了AW - IPM的财务文件和工作人员时间，并在2008年至2011年每年秋季对AW - IPM区域和对照区域平均415户随机抽取的家庭进行了调查。因院子和门廊活动而损失的时间是通过计算如果没有蚊子问题，在一个夏季平均一周内这些活动的实际时间与潜在时间之间的差异得出的。AW - IPM的估计净效益基于交叉分析和差异分析。根据受访者为院子或门廊活动中假设的额外一小时无蚊时间的支付意愿以及关于质量调整生命年（QALY）估值的文献，对损失时间的减少进行估值。AW - IPM每个成年人每年的增量成本为41.18美元。与对照区域相比，在基年（2008年）至干预年（2009 - 2011年）期间，AW - IPM区域因蚊子导致的每周夏季损失时间减少了3.30小时。调查受访者认为这种改善对每个成年人每周夏季价值27.37美元。在为期13周的夏季，成年居民平均获得了42.96小时的院子和门廊活动时间，价值355.82美元。夏季的净效益为314.63美元。每个成年人每年平均获得0.0027个QALY，AW - IPM每获得一个QALY的成本效益为15,300美元。因获得时间而产生的效益成本比为8.64，这表明在AW - IPM上每花费1美元，就能为成年人带来价值超过8美元的额外门廊和院子活动时间。
