DIET AND NUTRIENTS AS RISK FACTORS OF COLON CANCER-A POPULATION-BASED CASE-CONTROL STUDY IN SHANGHAI / 营养学报

ABSTRACT

In order to describe the epidemiological features and explore the risk factors of colon cancer, a population-based case-control study involving 476 cases of colon cancer and 857 controls matched by age and sex was carried out from Sep. 1988 to Aug. 1989. In this paper the risk factors related to colon cancer are reported as follows; The major risk factors of colon cancer in the area were generally in accordance with the prevalent hypothesis, colon cancer in Shanghai urban area may present the characteristics of low risk areas. Analysis of single and multiple factors of food intake frequency and quantity indicated that most vegetables usually cast a protective effect. Males in the highest quartile of intake of vegetables had a OR of 0.4 (P trend