[Epidemiologic study on peripheral vascular diseases in Shanghai].

Epidemiologic investigation and study were made on peripheral vascular diseases in Shanghai area during 1988 and 1989. The total number of examined subjects was 30,712, including peasants and workers from heavy and light industries. The number of the subjects suffered from peripheral vascular diseases was 2,679, with an incidence of 8.72%. Among them, varicosity of the superficial veins in the lower extremities was found in 2,577, and other peripheral vascular diseases were found in 102. Risk factors for varicose veins include hard labour, body mass, standing, pregnancy and sitting. New concepts about the varicose veins were advanced by the authors.