Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Work by Geronimus cited in account of Serena Williams' maternal health complications

Alexander and Massey compare outcomes for children whose parents did and did not take part in Great Migration

Geronimus on pushing past early dismissal of her weathering hypothesis

More News

Highlights

AA named 2018 Best Place to Live in America (out of 100 cities)

Remembering Jim Morgan, founding member of ISR and creator of the PSID

1/17/18: ISR screening and discussion of documentary "Class Divide" at Michigan Theater

Bailey et al. find higher income among children whose parents had access to federal family planning programs in the 1960s and 70s

More Highlights

Next Brown Bag

Mon, Jan 22, 2018, noon: Narayan Sastry

David Lam photo

Modeling Seasonality in Fecundability and Births

Publication Abstract

Lam, David, Jeffrey A. Miron, and Ann Riley. "Modeling Seasonality in Fecundability and Births." PSC Research Report No. 92-244. 7 1992.

This paper uses a model of seasonal fluctuation in fecundability and births to analyze the plausibility of several proposed explanations of birth seasonality. We begin with a model of fecundability at the individual level that combines behavioral and biological components, with particular attention to the role of coital frequency, sperm concentration, and fetal loss. The individual level model is expanded into a model of seasonal fluctuations in total births at the population level, explicitly accounting for seasonal fluctuations in the size of the susceptible population. Simulation of the model suggest that fluctuations in the components of fecundability in response to extreme heat could plausibly generate changes in conception rates similar in magnitude to observed patterns. Little independent evidence exists, however, to confirm the effects of extreme heat on the components of fecundability.

Browse | Search : All Pubs | Next