Comparative study of bronchogenic carcinoma In population aged above 45-year-old in keeyo (native cigar) smokers and non-smokers

This is a report of comparative study of Keeyo smokers and non-smokers group. between 571 persons, sampling at random, being used as population base and 45 cases of bronchogenic CalCll1OI11a admitted in Maharaj Nakorn Chiang Mai Hospital: aged more than 45 years. There is defi nite statistical evidence of keeyo smoking as a cause of increased incidences of bronchogeniC carClnOl11a tn nortllern Thailand. Chiang Mai Med Bull. 1991;31:5-9.