Hi everyone,

I have a continues, all positive outcome (CTDI) and it is skewed. I checked ln(CTDI) which is still not normal. I'm not sure which of the following options is the correct one.

Regards,

I have a continues, all positive outcome (CTDI) and it is skewed. I checked ln(CTDI) which is still not normal. I'm not sure which of the following options is the correct one.

**1- xtgee CTDI var1 var2, corr(independent)**(I've used this option because I know that GEE approach forgoes the distribution assumption, providing valid inference regardless of the distribution of the data.)**2-xtgee ln_CTDI var1 var2, corr(independent) efom**(I ran this model and got very different results from option 1)**3-xtgee CTDI var1 var2, family(gamma) link(log) corr(independent)**Regards,

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