Golding J, Butler N R, Newcombe R G
J Epidemiol Community Health. 1983 Mar;37(1):78-81. doi: 10.1136/jech.37.1.78.
Recent authors have suggested that cross-sectional studies of adverse outcome of pregnancy are misleading, and that the only valid method of analysis controls for eventual number of pregnancies. The present study shows, by simple examples, that such a method produces results that cannot be interpreted in the way claimed for them.
近期有作者指出，关于妊娠不良结局的横断面研究具有误导性，唯一有效的分析方法是对最终妊娠次数进行控制。本研究通过简单示例表明，这种方法得出的结果无法按照其宣称的方式进行解读。
