d STB-27 ssa7. Analysis of follow-up studies. d STB insert by d David Clayton, MRC Biostatistical Research Unit, Cambridge; d Michael Hills, London School of Hygiene and Tropical Medicine, London. d Support: david.clayton@@mrc-bsu.cam.ac.uk and mhills@@lshtm.ac.uk d After installation, see help ^lexis^, help ^mhrate^, and d help ^tabrate^. f ssa7/lexis.ado f ssa7/lexis.hlp f ssa7/mhrate.ado f ssa7/mhrate.hlp f ssa7/tabrate.ado f ssa7/tabrate.hlp f ssa7/kcal.dta