| OR (95% CI) | |||
|---|---|---|---|
| Variable | All provinces | Provinces with screening programs* | Provinces without screening programs |
| Age, yr | |||
| 50–54 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| 55–59 | 1.70 (1.57–1.84) | 1.78 (1.59–2.00) | 1.64 (1.47–1.83) |
| 60–64 | 2.21 (2.03–2.40) | 2.67 (2.35–3.03) | 1.92 (1.72–2.16) |
| 65–69 | 2.33 (2.12–2.56) | 2.97 (2.57–3.43) | 1.96 (1.72–2.22) |
| 70–74 | 2.67 (2.40–2.98) | 3.08 (2.61–3.64) | 2.37 (2.05–2.74) |
| Sex | |||
| Female | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Male | 1.02 (0.96–1.09) | 0.91 (0.83–0.99) | 1.12 (1.04–1.22) |
| Income, $ | |||
| < 20 000 | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| 20 000–39 000 | 1.01 (0.90–1.15) | 1.07 (0.89–1.30) | 0.99 (0.84–1.16) |
| 40 000–59 999 | 1.17 (1.04–1.33) | 1.25 (1.03–1.52) | 1.15 (0.98–1.36) |
| 60 000–79 999 | 1.11 (0.98–1.27) | 1.33 (1.09–1.62) | 1.01 (0.85–1.20) |
| ≥ 80 000 | 1.50 (1.33–1.70) | 1.75 (1.45–2.12) | 1.38 (1.17–1.62) |
| Marital status | |||
| Married | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Common-law | 0.84 (0.76–0.94) | 1.16 (0.97–1.40) | 0.72 (0.64–0.82) |
| Widowed/separated/divorced | 0.90 (0.83–0.98) | 0.96 (0.85–1.09) | 0.86 (0.77–0.96) |
| Single (never married) | 0.94 (0.84–1.06) | 1.23 (1.02–1.48) | 0.80 (0.69–0.92) |
| Obesity | |||
| Underweight/normal | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Overweight | 1.08 (1.00–1.17) | 0.98 (0.87–1.10) | 1.19 (1.07–1.33) |
| Obese | 0.89 (0.82–0.96) | 0.83 (0.74–0.93) | 0.94 (0.85–1.05) |
| Smoking | |||
| Daily | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Occasional/former | 1.81 (1.67–1.96) | 1.78 (1.58–2.01) | 1.83 (1.64–2.03) |
| Never smoked | 1.55 (1.42–1.69) | 1.42 (1.25–1.61) | 1.66 (1.47–1.88) |
| Diabetes | |||
| No | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Yes | 0.91(0.83–1.01) | 0.79(0.69–0.91) | 1.01(0.89–1.15) |
| Physical examination | |||
| No regular pattern | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| At least once annually | 0.47 (0.44–0.50) | 0.41 (0.38,0.45) | 0.51 (0.47,0.55) |
| Self-described general medical status | |||
| Poor | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Fair | 0.78 (0.65–0.94) | 0.76 (0.58–0.99) | 0.74 (0.57–0.97) |
| Good | 0.74 (0.62–0.89) | 0.73 (0.57–0.94) | 0.73 (0.56–0.93) |
| Very good | 0.72 (0.60–0.86) | 0.79 (0.61–1.02) | 0.64 (0.49–0.82) |
| Excellent | 0.75 (0.62–0.90) | 0.74 (0.56–0.98) | 0.71 (0.54–0.92) |
| Restriction of activities | |||
| Sometimes | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |
| Often | 1.05 (0.94–1.16) | 1.22 (1.04–1.43) | 0.94 (0.82–1.08) |
| Never | 0.83 (0.77–0.90) | 1.04 (0.93–1.17) | 0.70 (0.63–0.78) |
| Province | |||
| With screening programs | 1.91 (1.80–2.02) | – | – |
| Without screening programs | 1.00 (ref) | – | – |
Note: CI = confidence interval, CRC = colorectal cancer. *Nova Scotia, Ontario, Manitoba and Saskatchewan.