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首页> 美国卫生研究院文献>British Medical Journal >Detecting implausible social network effects in acne height and headaches: longitudinal analysis
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Detecting implausible social network effects in acne height and headaches: longitudinal analysis

机译：检测痤疮身高和头痛方面令人难以置信的社交网络影响：纵向分析

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>Objective To investigate whether “network effects” can be detected for health outcomes that are unlikely to be subject to network phenomena.>Design Statistical analysis common in network studies, such as logistic regression analysis, controlled for own and friend’s lagged health status. Analyses controlled for environmental confounders.>Setting Subsamples of the National Longitudinal Study of Adolescent Health (Add Health).>Participants 4300 to 5400 male and female adolescents who nominated a friend in the dataset and who were both longitudinally surveyed.>Measurements Health outcomes, including headache severity, acne severity, and height self reported by respondents in 1994-5, 1995-6, and 2000-1.>Results Significant network effects were observed in the acquisition of acne, headaches, and height. A friend’s acne problems increased an individual’s odds of acne problems (odds ratio 1.62, 95% confidence interval 0.91 to 2.89). The likelihood that an individual had headaches also increased with the presence of a friend with headaches (1.47, 0.93 to 2.33); and an individual’s height increased by 20% of his or her friend’s height (0.18, 0.15 to 0.26). Each of these results was estimated by using standard methods found in several publications. After adjustment for environmental confounders, however, the results become uniformly smaller and insignificant.>Conclusions Researchers should be cautious in attributing correlations in health outcomes of close friends to social network effects, especially when environmental confounders are not adequately controlled for in the analysis.
机译：>目的调查是否可以为不太可能受到网络现象影响的健康结果检测到“网络效应”。>设计网络研究中常见的统计分析，例如逻辑回归分析，控制自己和朋友的滞后健康状况。针对环境混杂因素的分析。>设置国家青少年健康纵向研究（添加健康）子样本。>参与者在数据集中指定了一位朋友的4300至5400名男性和女性青少年>测量结果：健康状况，包括头痛的严重程度，痤疮的严重程度和身高的自我调查者在1994-5、1995-6和2000-1中报告。>结果< / strong>在痤疮，头痛和身高的获得中观察到明显的网络效应。朋友的痤疮问题增加了个人痤疮问题的几率（赔率1.62，95％置信区间0.91至2.89）。当朋友出现头痛时，个人出现头痛的可能性也会增加（1.47，0.93至2.33）；而一个人的身高增加了他或她朋友的身高的20％（0.18、0.15到0.26）。这些结果中的每一个都是使用几种出版物中使用的标准方法估算的。但是，在对环境混杂因素进行调整之后，结果会变得越来越小且无关紧要。>结论研究人员应谨慎地将好朋友的健康结果与社交网络效应相关联，尤其是在环境混杂因素得不到充分控制的情况下在分析中。

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