...
首页> 外文期刊>Journal of health economics >Is Obesity Contagious? Social Networks Vs. Environmental Factors In The Obesity Epidemic
【24h】

Is Obesity Contagious? Social Networks Vs. Environmental Factors In The Obesity Epidemic

机译:肥胖会传染吗?社交网络与肥胖流行中的环境因素

获取原文
获取原文并翻译 | 示例
           

摘要

This note's aim is to investigate the sensitivity of Christakis and Fowler's claim [Christakis, N., Fowler, J., 2007. The spread of obesity in a large social network over 32 years. The New England Journal of Medicine 357,370-379] that obesity has spread through social networks. It is well known in the economics literature that failure to include contextual effects can lead to spurious inference on "social network effects." We replicate the NEJM results using their specification and a complementary dataset. We find that point estimates of the "social network effect" are reduced and become statistically indistinguishable from zero once standard econometric techniques are implemented. We further note the presence of estimation bias resulting from use of an incorrectly specified dynamic model.
机译:本说明的目的是调查Christakis和Fowler主张的敏感性[Christakis,N.,Fowler,J.,2007。肥胖在大型社交网络中的传播长达32年。 [新英格兰医学杂志357,370-379]肥胖已通过社交网络传播。在经济学文献中众所周知,未能包含上下文效应会导致对“社会网络效应”的虚假推断。我们使用其规范和补充数据集来复制NEJM结果。我们发现,一旦实施了标准的计量经济学技术,“社会网络效应”的点估计就会减少,并且在统计上与零没有区别。我们进一步注意到由于使用了错误指定的动态模型而导致的估算偏差。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号