/** HSB dataset example **/
use http://www.stata-press.com/data/mlmus2/hsb.dta, clear
xtsum mathach ses sector, i(schoolid)


use http://www.stata-press.com/data/mlmus2/smoking.dta, clear

/* fit the null model */
xtreg birwt, i(momid) mle

/** FROM THE 10-11am WORKSHOP **/
use "studentparentsschool1 6 06 2009.dta", clear
keep subnatio-country  seorfiscocat1-seorfiscocat192
sample 10
recode seorfiscocat* (0=.)
reshape long seorfiscocat, i(subnatio schoolid stidstd cnt country) j(fatherocc)
drop if seorfiscocat==.