Impact of intervention surveillance bias on analyses of child welfare report outcomes
Impact of intervention surveillance bias on analyses of child welfare report outcomes
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DOI：
10.1177/1077559506291261
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发表时间：
2006-11-01
影响因子：
5.1
通讯作者：
Bard, David
中科院分区：
文献类型：
--
作者：
Chaffin, Mark;Bard, David
利用儿童虐待干预结果评价的数据进行了两项研究，研究了监测偏倚的几个方面，包括直接测量监测报告率，比较监测与非监测报告的特征，研究不同服务类型和剂量的差异，以及测试忽略与删除数据中的监测报告如何影响生存分析。在研究中，监督偏倚的净效应很小。家访服务并不比基于中心的服务更有偏见，与预防病例相比，干预措施的偏见并不更大。监测报告同样严重的非监测报告，未能支持的假设，即监测作为早期发现不太严重的虐待。然而，在参与者积极参与服务的时间段内，监督偏差要大得多。因此，监督的净影响可能会因服务参与率和服务参与的相对持续时间以及服务后随访时间而异。
Two studies using datafrom child maltreatment intervention outcome evaluations were conducted examining several aspects of surveillance bias, including directly measuring rates Of surveillance reporting, comparing characteristics of surveillance versus nonsurveillance reports, examining differences across service types and doses, and testing how ignoring versus removing surveillance reports in the data affects survival analysis. The net effect of surveillance bias was small in the studies examined. Home-visiting services were not biased more than center-based services, and bias was not greater among intervention compared to prevention cases. Surveillance reports were equally as severe as nonsurveillance reports, failing to support the hypothesis that surveillance serves as early detection of less severe maltreatment. However, surveillance bias was far more substantial during time periods when participants were actively engaged in services. Therefore, the net impact of surveillance could vary with service engagement rates and the relative duration of service engagement and postservice follow-up times.