Background
: It is well known that the vinyl house cultivation affects the health status of rural farmers. But few studies about the vinyl house disease are available. Therefore, this study was conducted to investigate the vinyl hose syndrome and its related factors in Chonnam rural residents.

Methods : 453 vinyl house farmers and 652 non-vinyl house farmers aged 20 years or more were interviewed individually with a structured questionnaire from May to June, 1992.

Results : The mean age of the vinyl house workers and non-vinyl house workers was 41.0 and 43.4 years old respectively. The mean daily working hours were 7.0 hours in the vinyl house group and 4.6 hours in the non-vinyl house group. The mean frequency of applying agricultural chemicals in one year was 10.9 in the vinyl house group and 6.2 in the non-vinyl house group. The rate of intoxication by agricultural chemicals of the vinyl house workers was 1.8 times higher than that of the non-vinyl house group. The prevalence of farmers' syndrome was 13.8% in females of the non-vinyl house group. The mean score of subjective fatigue symptoms reported by the vinyl house and non-vilyl house groups was 15.0 and 15.5 respectively. The complaint rates of the vinyl house group were higher than those of the non-vinyl house group in 'headache', 'yawning', 'hate to talk', 'irritability', 'general ache', 'dry throat' and 'cold sweating'(P<0.05). Factors strongly associated with the vinyl house disease were working duration, daily working hours, the score of Farmer's syndrome in males and the score of Farmer's syndrome in females.

Conclusion : Compared the vinyl house group with the non-vinyl house group, the prevalence of farmer's syndrome in the former was lower, but the complaint rated of subjective fatigue symptoms causing intoxication with agricultural chemicals and heat stroke, etc. by specific working environment into the vinyl house were higher than the latter.

Background
: Upper gastrointestinal bleeding is the most difficult problems at emergency status and early accurate diagnosis and prompt emergent care is needed because of variable etiology and high mortality. We studied comparatively about relationship between upper gastrointestinal bleedings and it's prognostic factors.

Methods : We analyzed 42 cases that upper gastrointestinal bleeding from on Feb. 1992 to on Jan 1993 at hospital setting.

Results : Among the 42 cases, the ratio of the male to the female is 2.8 to 1, more common in the male and the 3rd decade is the most common. For the etiologic cause, peptic ulcer is the most common as 19 cass. The character of the bleeding is mixed type of hematemesis and hematchezia to 45.2%. The predisposing factors are alcohol abuse and drug.

Conclusion : The significant risk factors are the evidence of associated disease, increased bleeding tendency, decreased hematocrit and increased BUN. We conclude that these patients must be treated with early, active management and therapy.