modified Poisson regression model with mixed effects stata command

[Nazarius Mbona Tumwesigye]

Hello, does anyone have any quick command for modified Poisson regression model with mixed effects in stata? this command from the GLM- multilevel option does not seem to have option for within and between level variance estimates!
meglm cp i.year if gender==2 & marital_status <3 [pweight = IQweight], family(poisson) link(log) eform

[Clyde Schechter]

Well, the command you have shown, although you used the -meglm- command is actually a one-level -glm- problem. In fact, it is completely equivalent to -poisson cp i.year if gender == 2 & marital_status < 3 [pweight - IQweight]-. You haven't specified any hierarchy of levels there.

It needs to be:

meglm cp i.year if gender==2 & marital_status <3 [pweight = IQweight] || some_variable:, family(poisson) link(log) eform

where you replace some_variable by the name of the variable that defines the second level of the model.

Also, you can save yourself a little typing by using -mepoisson- instead of -meglm- and omitting the -family(poisson) link(log)- part.