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. 2022 Mar 15;10(1):E203–E212. doi: 10.9778/cmajo.20210051

Table 5:

Association between having a regular primary care provider and being up to date for colorectal cancer screening*

Variable Overall Stratified


Unadjusted OR (95% CI) Adjusted OR (95% CI) Male Adjusted OR (95% CI) Female Adjusted OR (95% CI)
Regular primary care provider

 Yes (Ref.) 1.00 1.00 1.00 1.00

 No 0.23 (0.16–0.33) 0.25 (0.17–0.38) 0.20 (0.11–0.35) 0.34 (0.19–0.59)

Age, yr

 50–59 (Ref.) 1.00 1.00 1.00 1.00

 60–74 2.08 (1.71–2.54) 1.86 (1.48–2.35) 1.53 (1.08–2.18) 2.22 (1.63–3.00)

Marital status

 Widowed, divorced, separated or single (Ref.) 1.00 1.00 1.00 1.00

 Married or common law 1.52 (1.24–1.88) 1.44 (1.14–1.83) 1.57 (1.06–2.32) 1.29 (0.95–1.74)

Education attainment

 Less than secondary graduation (Ref.) 1.00 1.00 1.00 1.00

 Secondary school education 1.29 (0.91–1.83) 1.09(0.70–1.72) 0.76 (0.38–1.49) 1.66 (0.94–2.91)

 Postsecondary certificate or degree 1.45 (1.06–1.97) 1.13 (0.74,1.74) 0.82 (0.44–1.52) 1.62 (0.96–2.74)

Race

 White (Ref.) 1.00 1.00 1.00 1.00

 Indigenous or other visible minority 0.64 (0.43–0.93) 0.69 (0.41–1.15) 0.85 (0.36–1.99) 0.57 (0.31–1.04)

Immigration status

 Born in Canada (Ref.) 1.00 1.00 1.00 1.00

 Permanent or nonpermanent resident 0.76 (0.58–0.99) 0.93 (0.66–1.37) 0.73 (0.40–1.30) 1.24 (0.78–1.99)

Smoking status

 Never smoker (Ref.) 1.00 1.00 1.00 1.00

 Current smoker (daily or occasional) 0.52 (0.40–0.67) 0.61 (0.43–0.87) 0.68 (0.39–1.17) 0.54 (0.35–0.83)

 Past smoker (daily or occasional) 1.00 (0.79–1.27) 0.94 (0.71–1.22) 1.08 (0.72–1.62) 0.81 (0.56–1.18)

Illicit drug use in previous 12 mo

 No (Ref.) 1.00 1.00 1.00 1.00

 Yes 0.54 (0.37–0.77) 0.69 (0.43–1.09) 0.67 (0.39–1.16) 0.61 (0.22–1.67)

Body mass index

 Normal (18.5–24.9) (Ref.) 1.00 1.00 1.00 1.00

 Overweight (25.0–29.9) 1.06 (0.82–1.37) 0.98 (0.60–1.13) 0.95 (0.60–1.50) 0.97 (0.67–1.38)

 Obese (≥ 30.0) 1.27 (0.98–1.63) 1.09 (0.82–1.45) 1.00 (0.64–1.56) 1.09 (0.75–1.59)

Moderate or vigorous physical activity,§ min/wk

 < 150 (inadequate) (Ref.) 1.00 1.00 1.00 1.00

 ≥ 150 (adequate) 1.38 (1.12–1.69) 1.39 (1.09–1.76) 1.33 (0.91–1.95) 1.47 (1.08–2.02)

General health

 Poor or fair (Ref.) 1.00 1.00 1.00 1.00

 Good 1.39 (0.92–2.11) 0.76 (0.54–1.09) 0.85 (0.48–1.52) 0.68 (0.44–1.07)

 Very good 1.54 (1.03–2.29) 0.89 (0.61–1.24) 1.03 (0.58–1.84) 0.76 (0.49–1.19)

 Excellent 1.41 (0.94–2.12) 0.75 (0.50–1.12) 0.71 (0.36–1.39) 0.81 (0.50–1.31)

Note: CI = confidence interval, FOBT = fecal occult blood test (either guaiac FOBT or fecal immunochemical test), OR = odds ratio, Ref. = reference.

*

We considered respondents to be up to date for colorectal cancer screening if they had FOBT in the previous 2 years or colonoscopy or sigmoidoscopy in the previous 5 years.

About 9% of the total sample (n = 4600, weighted n = 1 081 161) were excluded from the models owing to missing data across variables. The models included 4300 respondents (weighted n = 997 495). Adjusted models are simultaneously adjusted for every other variable included in the model. We did not include the mammogram variable to enable comparisons across males and females.

Body mass index was calculated based on the international standard.24

§

Physical activity was defined based on Canadian physical activity guidelines. 25