This is a medical statistics question rather than specifically a
Stata question - sorry, but I am a bit desperate and this is a very
knowledgeable group.
I am trying to estimate the prevalence of a disease in different
areas, for health services provision modelling.
The authoritative document on this is a government report, which
presents adjusted odds ratios & CIs derived from logistic
regressions for different demographic characteristics (e.g. age,
sex, ethnicity, social class). It also gives point estimates and
95% CIs for prevalence rates (1.9% +/- 0.3% in whites, say, 1.5%
+/- 0.5% in people of Chinese origin, etc.) for different demographic
characteristics.