Colorectal Cancer Screening in First Nations People Living in Manitoba

Abstract

Background: Because the burden of colorectal cancer (CRC) seems to be increasing in First Nations, it is important to better understand CRC screening utilization. The objective of this study was to describe CRC screening among First Nations living in Manitoba.Methods: The Federal Indian Register was linked to two provincial databases. A negative binomial model was used to compare the probability of First Nations having a fecal occult blood test (FOBT), colonoscopy, or flexible sigmoidoscopy (FS) with all other Manitobans.Results: First Nations who lived in Winnipeg were significantly less likely to have had a FOBT in the previous 2 years than all other Manitobans who lived in Winnipeg [rate ratio (RR) ¼ 0.40; 95% confidence intervals (CI), 0.37-0.44]. There

Geographic variation and factors associated with colorectal cancer incidence in Manitoba

“…24 The reasons for this change in CRC epidemiology is likely multifactorial, including changing lifestyles, increasing prevalence of CRC risk factors (such as smoking and obesity), and lower CRC screening rates in First Nation communities. 25,26 In multivariable analysis, we are reporting higher CRC incidence in rural areas, which suggests that these areas should be one of the foci of CRC reduction initiatives in Manitoba. Whether the overall lower incidence in urban areas is due to differences in CRC screening rates, lifestyle, or behavioural risk factors should be assessed in future studies.…”

Cancer Survival Disparities Between First Nation and Non-Aboriginal Adults in Canada: Follow-up of the 1991 Census Mortality Cohort

“…Surveys and linkage studies measuring the uptake of breast, cervical, and colorectal cancer screening among First Nations have had mixed findings (50)(51)(52)(53)(54). Screening could result in true differences in survival but may also exaggerate differences in survival between two populations with different screening uptake as a result of lead-time.…”

Cancer Incidence, Mortality, and Stage at Diagnosis in First Nations Living in Manitoba

“…An additional factor that likely contributes to the increasing crc incidence and mortality among fn people is the lower rate of screening in this population 48 . In the present study, 36.2% of aoms diagnosed with stages i-ii crc and 33.0% of those diagnosed with stages iii-iv crc had undergone a fobt in the preceding 9 months; those percentages compare with 6.3% and 23.3% among their fn counterparts.…”