Demographic Consequences of Barker Frailty

  • Alberto PalloniEmail author
  • Hiram Beltrán-Sánchez
Part of the The Springer Series on Demographic Methods and Population Analysis book series (PSDE, volume 39)


In this paper we develop a formal model to represent effects of early life conditions with delayed health impacts on old age mortality. The model captures several mechanisms through which early conditions influence adult health and mortality. The model is an extension of the standard frailty model in demographic analysis but has distinct and unique implications. We show that populations with Barker frailty experience adult mortality patterns equivalent to a class of time-varying and/or age dependent frailty. We demonstrate formally and via simulations that populations with Barker frailty could experience unchanging or increasing adult mortality even when background mortality has been declining for long periods of time. We also show that the rate of increase of adult mortality rates in populations with Barker frailty will change over time and will always be lower that the rate of increase of adult mortality in the background mortality pattern. We argue that Barker frailty should be pervasive in low-to-middle income populations, e.g. those that experienced a mortality decline fueled largely by post-1950 medical innovations that reduced the load and lethality of infectious and parasitic diseases.


Barker hypothesis Old age mortality Demographic frailty 


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Center for Demography of Health & AgingUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Community Health Sciences and California Center for Population Research (CCPR)University of CaliforniaLos AngelesUSA

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