Estimating numbers of unsheltered homeless people through plant-capture and postcount survey methods
Estimating numbers of unsheltered homeless people through plant-capture and postcount survey methods
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DOI：
10.2105/ajph.2005.083600
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发表时间：
2008-08-01
影响因子：
12.7
通讯作者：
Wanderling, Joseph
中科院分区：
文献类型：
--
作者：
Hopper, Kim;Shinn, Marybeth;Wanderling, Joseph
目标.我们试图提高纽约市对无家可归人口估计的准确性。我们采用了2种方法来提高计数的准确性：植物捕获策略，其中嵌入诱饵（或“植物”）被用来估计人口普查员错过的可见无家可归者的比例，以及对服务用户进行的事后调查，旨在估计没有庇护的无家可归者的比例。17个地点（29%）的工厂报告说，计数中遗漏了，因为计数员没有访问这些地点或没有采访工厂。293无家可归的服务用户谁不是在庇护所，31%至41%的位置被认为是不可见的柜台。植物捕获估计和事后统计调查都是可行的方法，可以提高无家可归人口估计的准确性。
Objectives. We sought to increase the accuracy of New York City's estimates of its unsheltered homeless population.Methods. We employed 2 approaches to increasing count accuracy: a plant-capture strategy in which embedded decoys (or "plants") were used to estimate the proportion of visible homeless people missed by enumerators and a postcount survey of service users designed to estimate the proportion of unsheltered homeless people who were not visible.Results. Plants at 17 sites (29%) reported being missed in the count, because counters either did not visit those sites or did not interview the plants. Of 293 homeless service users who were not in shelters, 31% to 41% were in locations deemed not visible to counters.Conclusions. Both plant-capture estimation and postcount surveys are feasible approaches that can increase the accuracy of estimates of unsheltered homeless populations.