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.
Multivariate Poisson regression production type model (dairy or beef cattle), France 1996–2001
RR, Relative risk; CI, confidence interval.
Categorized variable.
Continuous variable.
No significant interaction between latitude and longitude.
Global Wald statistic.
