Standard Article

Fertility Studies

Environmental Health

  1. David B. Dunson

Published Online: 15 SEP 2006

DOI: 10.1002/9780470057339.vaf003

Encyclopedia of Environmetrics

Encyclopedia of Environmetrics

How to Cite

Dunson, D. B. 2006. Fertility Studies. Encyclopedia of Environmetrics. 2.

Author Information

  1. National Institute of Environmental Health Sciences, NC, USA

Publication History

  1. Published Online: 15 SEP 2006


In recent years there has been increasing concern that human exposure to environmental agents may disrupt the endocrine system and alter reproduction. For example, some studies have observed secular declines in semen quality over the past 50 years, and several widely used chemicals have been shown to adversely effect human fertility. This article briefly reviews statistical methods for assessing environmental effects on human fertility, with particular emphasis on methods for analysis of data from time to pregnancy (TTP) studies.