<DIV class=arttitle>时间序列分析在公共卫生的应用</DIV><DIV class=arttitle>ON TIME SERIES ANALYSIS OF PUBLIC HEALTH AND BIOMEDICAL DATA</DIV><P></P><STRONG><NOBR>Scott L. Zeger, </NOBR>&shy;<WBR><NOBR>Rafael Irizarry, and </NOBR>&shy;<WBR><NOBR>Roger D. Peng</NOBR>&shy;<WBR></STRONG> <br><P>Department of Biostatistics, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland 21205;<br><P>This paper gives an overview of time series ideas and methods used in public health and biomedical research. A time series is a sequence of observations made over time. Examples in public health include daily ozone concentrations, weekly admissions to an emergency department, or annual expenditures on health care in the United States. Time series models are most commonly used in regression analysis to describe the dependence of the response at each time on predictor variables including covariates and possibly previous values in the series. For example, Bell et al. use time series methods to regress daily mortality in U.S. cities on concentrations of particulate air pollution. Time series methods are necessary to make valid inferences from data by accounting for the correlation among repeated responses over time.</P></P><DIV><H1></DIV><DIV></H1> </DIV><!-- /abstract content --><!-- fulltext content -->

[此贴子已经被作者于2006-5-24 22:24:42编辑过]