National Academies Press: OpenBook

Population Dynamics of Senegal (1995)

Chapter: Appendix C: Methodology for Analysis of Child Mortality

« Previous: Appendix B: Correcting the Fertility Estimates in the 1988 Census
Suggested Citation:"Appendix C: Methodology for Analysis of Child Mortality." National Research Council. 1995. Population Dynamics of Senegal. Washington, DC: The National Academies Press. doi: 10.17226/4900.
×

Appendix C
Methodology for Analysis of Child Mortality

The procedure used for analyzing child mortality, Poisson regression, has been described in detail in the volume entitled Demographic Effects of Economic Reversals in Sub-Saharan Africa (Working Group on Demographic Effects of Economic and Social Reversals, 1993:42-43) and is reiterated in large part here.

Poisson regression is essentially a methodology for the multivariate analysis of counts of occurrences, in this case, of child deaths. The method assumes some underlying risk or hazard of the event occurring in some category of duration of exposure, in this case an age group of children. In our model, the natural logarithm of the hazard, h ia, for observation i of age group a is assumed to be given by an additive expression including the base hazard for the age group, ha, and the effects of a series of other variables, X, that are assumed to influence the hazard:

In(hia) = ha + τ'Xi .

Note that in our model, the effects of the variables X are assumed not to vary with age.

The expected number of events or deaths, D'ia, observed for individuals with a particular set of characteristics in duration-of-exposure category a, will be the hazard multiplied by the exposure time of such individuals in the exposure category, Eia. Thus for individuals with characteristics i and age a,

Suggested Citation:"Appendix C: Methodology for Analysis of Child Mortality." National Research Council. 1995. Population Dynamics of Senegal. Washington, DC: The National Academies Press. doi: 10.17226/4900.
×

In(D'ia) - In(Eia) = ha + τ'Xi .

The logarithm of the exposure term Eia is commonly referred to as the ''offset," which standardizes cell counts for varying exposure times. We set up the data for Poisson analysis by counting events (deaths) and exposure time in each cell of a matrix defined by age a, time t, and a vector of control variables X.

Suggested Citation:"Appendix C: Methodology for Analysis of Child Mortality." National Research Council. 1995. Population Dynamics of Senegal. Washington, DC: The National Academies Press. doi: 10.17226/4900.
×
Page 220
Suggested Citation:"Appendix C: Methodology for Analysis of Child Mortality." National Research Council. 1995. Population Dynamics of Senegal. Washington, DC: The National Academies Press. doi: 10.17226/4900.
×
Page 221
Next: Appendix D: Growth Balance Methods for Estimating Coverage of Adults Deaths »
Population Dynamics of Senegal Get This Book
×
Buy Paperback | $55.00 Buy Ebook | $43.99
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

This volume, the last in the series Population Dynamics of Sub-Saharan Africa, examines key demographic changes in Senegal over the past several decades. It analyzes the changes in fertility and their causes, with comparisons to other sub-Saharan countries. It also analyzes the causes and patterns of declines in mortality, focusing particularly on rural and urban differences.

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook, NAP.edu's online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    Switch between the Original Pages, where you can read the report as it appeared in print, and Text Pages for the web version, where you can highlight and search the text.

    « Back Next »
  6. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  7. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  8. ×

    View our suggested citation for this chapter.

    « Back Next »
  9. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!