Sex, drugs, and race: how behaviors differentially contribute to the sexually transmitted infection risk network structure.
Sex, drugs, and race: how behaviors differentially contribute to the sexually transmitted infection risk network structure.
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DOI：
10.2105/ajph.2012.300908
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发表时间：
2013-02
影响因子：
12.7
通讯作者：
Morris M
中科院分区：
文献类型：
--
作者：
Adams J;Moody J;Morris M
研究风险行为如何区别性地将性传播感染的“高风险”人群联系起来。从观察到的网络代表的“完整”的风险网络和风险网络之间的受访者，我们构建了一系列的边缘删除的反事实网络，选择性地删除性关系，毒品关系和关系，涉及性和毒品和比较随机集。与这些边缘删除网络，我们展示了如何每个领带类型差异有助于观察到的网络的连接一系列标准的网络连接性措施（组件和双组件的大小，距离和传递率），和观察到的网络种族隔离。我们发现，性关系与网络中的其他关系类型不同，它以相对非冗余的方式在网络中提供了更广泛的影响力。此外，在这个人群中，性别关系比其他类型的关系更有可能跨越种族。每次仅基于一种传播模式的干预措施（例如，推广避孕套或针具交换）与同时解决风险相关行为的尝试相比，在减少性传播感染在人群中传播方面具有不同的潜力。
To examine how risk behaviors differentially connect a population at “high risk” for sexually transmitted infections. Starting from observed networks representing the “full” risk network and the risk network among respondents only, we construct a series of edge-deleted counterfactual networks that selectively remove sex ties, drug ties and ties involving both sex and drugs and a comparison random set. With these edge-deleted networks we demonstrate how each tie-type differentially contributes to the connectivity of the observed networks on a series of standard network connectivity measures (component and bicomponent size, distance and transitivity ratio), and the observed network racial segregation. We find that sex ties are unique from the other tie-types in the network, providing wider reach in the network, in relatively non-redundant ways. Additionally, in this population, sex ties are more likely to bridge across races than are other tie types. Interventions based only on one mode of transmission at a time (e.g., condom promotion or needle exchange) would have different potential for curtailing STI spread through the population than would attempts that simultaneously address risk-relevant behaviors.