METHODS:The cross-sectional methodological approach was used; 533 patients aged 17 or older were interviewed, between June and December, 2000. Data were submitted to bivariate and multivariate analyses. RESULTS: More than two thirds of the interviewed population reported the use of nonsteroidal anti-inflammatory drugs in a period of 1 month before the upper endoscopy. The most used nonsteroidal anti-inflammatory drugs were acetylsalicylic acid and diclofenac. An association was clearly shown between the use of these drugs and the occurrence of the studied lesions, with the latter attaining significance. There was also a significant association between nonsteroidal anti-inflammatory drugs use for a period greater than 15 days and the occurrence of the gastric lesions, with a higher odds ratio than for the other comparisons.
CONCLUSIONS:The results suggest that nonsteroidal anti-inflammatory drugs have a significant association with the occurrence of the gastric lesions and point to the need of further study of this issue in Brazil.