An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Figure 1. Comparison of the constrained and unconstrained estimates.
The error bars are one standard error above, and below, the point estimate. Panel (a): estimates of the model parameter β0. Panel (b): estimates of the probability of a birth for a woman with children (π1).