Dear Martin,
your modified version of Maarten`s code works very well for my purpose.
Thanks a lot.
Antonio
*************
sysuse auto, clear
clonevar make2=make
replace make="" in 2
replace make="" in 5
replace make="" in 22
replace make="" in 72
replace make2="" in 6
replace make2="" in 23
levels make
local levs "`r(levels)'"
levels make2
local levs2 "`r(levels)'"
/*same strings */
local levs3: list levs & levs2
di "number of strings " /*
*/ "in make and make2 = " /*
*/ `: word count `levs3''
*************
---------------------------------------
Antonio Acconcia
CSEF - Dipartimento di Economia
Università di Napoli Federico II
via Cinthia, 45 (Monte S.Angelo)
80126 Napoli - Italia
Tel: +39-81- 675096
Fax: +39-81-7663540
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