Résumé:
To study the relations between some lifestyle factors, some food groups’ frequency consumption and
CRC in Jijel region, north east of Algeria, we conduct a case control study among CRC patients of the
hospital Mohamed Seddik Ben Yahya in Jijel, using a lifestyle questionnaire and a food frequency
questionnaire. Comparing 34 cases with 34 controls revealed that high educational level (OR= 0.0578,
p-value= 0.0075), low household income (OR= 7.8386, p value= 0.0374), smoking (OR=0.0751, pvalue= 0.0174) and familial history of CRC (OR= 5.2500, p-value = 0.0034) may be associated with
CRC occurence in this population. A protective effect of consumption of dairy products (OR= 0.9808,
p-value= 0.0437) and cereals (OR= 0.9865, p-value= 0.0100) was observed whereas fish consumption
seems to be associated positively with CRC (OR= 1.0665 , p-value = 0.0392).In conclusion, besides
the fact that our results don’t indicate a major impact of diet on CRC incidence in the population of
Jijel, this work represents an introduction to the study of the effect of environmental factors, mainly
diet, on the occurrence of CRC between Algerians. Such studies will bring relevant approaches for
primary prevention.
