notes-unobserved heterogeneity

notes-unobserved heterogeneity - Eco 572: Research methods...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Eco 572: Research methods in Demography Unobserved Heterogeneity I will use the U.S. life tables for white and black males in 2002 that you used in Problem Set 1 to illustrate some calculations on unobserved heterogeneity. Please note that these are period life tables and therefore all calculations apply to hypothetical cohorts subject to current age-specific mortality rates. Serious work on the mortality crossover would look at cohort, not period, life tables. All I do here is illustrate how individual and population hazards can differ and how unobserved heterogeneity can produce an apparent crossover. Population Hazards and the Crossover File usWhiteBlackMales2002.dat has side-by-side data for white and black males, specifically age, and the l x columns for the two ethnic groups. . infile age lxw lxb using /// > http://data.princeton.edu/eco572/datasets/usWhiteBlackMales2002.dat (101 observations read) I compute the cumulative hazard as negative log survival. I then difference to compute the average hazard in each single year of age except the last. Because the hazard applies to a one-year interval I compute age midpoints adding 0.5.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

notes-unobserved heterogeneity - Eco 572: Research methods...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online