The following did not do what Tessa wanted
. gen test = date if def_inrange == 1
. bysort donor_id def_inrange date (test): replace test = test[1]
--------------------------------------------------------
You should:
.... : replace test=test[_N]
Svend
__________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone: +45 8942 6090
Home: +45 8693 7796
Email: [email protected]
__________________________________________
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