From the epidemiological point of view, health disorders of the farmers working in vinyl greenhouse were investigated by means of the simplified Cornell Medical Index.
The results obtained were as follows: 1. The number of affirmative answers to somatic items was larger with farmers working in a vinyl greenhouse than with other farmers.
2. Either male or female following complaints were more frequently found among vinyl greenhouse than among other farmers with significant difference: sensitiveness to cold, anorexia, nausea, arthralgia stomachache, iching of skin, dizziness, easily fatiguable dullness in some regions of the body in a morning, and moreover, strain in the eyes.
3. The pattern of the main symptoms complained by the farmers working in vinyl greenhouse was different from that attributed to the so-called Nodusho.
4. It seems that the differences between the two kinds of farmers were due to the peculiar environmental conditions and the labor under the high temperature and humidity in the venyl greenhause, and also due to frequent going in and out of the operation room the climatic condition of which is quite different.