cap log close
clear
log using StataLog, replace 

include "http://staff.pubhealth.ku.dk/~linearpredictors/datafiles/readFever.do"

/* Fig 2.2.1 */

egen risk=mean(death), by(alcogroup)
egen alcomean=mean(alco), by (alcogroup)
twoway (scatter risk alcomean), ytitle(Percentage fetal loss) xtitle(Drinks per week)

log close