Which panel data model to find causes of vaccination rates between US states?

[Guest]

Hi, I am doing a project where I must determine the social and economic factors for the differences in vaccination rates between US states. I have both survey data on vaccination intentions (national and statewide) and macroeconomic data (% vaccinated, GDP, etc.) across two years.

My problem are:

• A cross section analysis will probably lead to biased and inconsistent estimates due to unobserved heterogeneity.
• A fixed effects analysis will eliminate time-invariant variables, which probably explain most of the variation in my view.
• A random effects model seems implausible.

Any ideas for a panel regression model which could solve this?

[Clyde Schechter]

Take a look at the hybrid and correlated random effects models available in the -xthybrid- package, which is available from both Stata Journal and SSC.