Influence des facteurs socio-économiques et du niveau d'éducation sur le cancer colorectal chez une population marocaine

INTRODUCTION: Colorectal cancer is a true scourge and a major public health problem. The main purpose of this study was to identify the impact of socio-economic factors and education level on the onset of colorectal cancer and of diagnosis stage in the Moroccan population. METHODS: We conducted a case-control study of patients treated for cancer at the Mohammed VI center from January 2015 to January 2017. We interviewed, on a prospective basis and using a structured and pre-tested questionnaire, 225 patients and 225 eligible and consenting subjects. RESULTS: The average age of patients was 55.49± 14.06 years. In 53% of cases diagnosis was made at early-stage colorectal cancer while in 47% at advanced stage. In addition, a detailed analysis of the studied population according to the socio-economic status (SES), showed a proportion of 25.33% (patients) versus 17.33% (control) in the low SES group, while, equivalent rates (45.33% patients versus 45.33% control) in the middle SES group. In the high SES group, the rate of patients was only 16.89% patients versus 37.34% control (p = 0.0001). Education and SES were strongly correlated with diagnosis stage, with a significant difference. Then 36.44% of illiterate patients were diagnosed in advanced stage versus 5.33% of patients who had completed their secondary education level or university course (p = 0.02). Similarly 20.45% of patients with low SES were diagnosed in late stage versus 5.33% of patients with higher SES (p = 0.03). CONCLUSION: Our results highlight that the risk of developing colorectal cancer is strongly dependent on the education and the socio-economic status of patients. A more thorough investigation is needed to clarify the causes of this inequality.