Odds ratios for select characteristics for CCHS sample of women aged 40–74 who were screening mammography participants, 2012
| PARTICIPANT CHARACTERISTICS* | SCREENING MAMMOGRAPHY PARTICIPATION† | UNADJUSTED OR (95% CI)‡ | ADJUSTED OR (95% CI)‡‖ | |
|---|---|---|---|---|
| SAMPLE, %‡ | WEIGHTED, %§ | |||
| Age group, y | ||||
| • 40–49 | 29.1 | 31.4 | Reference | Reference |
| • 50–59 | 63.9 | 63.4 | 4.79 (4.37–5.24) | 5.11 (4.65–5.60) |
| • 60–69 | 69.4 | 70.3 | 6.48 (5.91–7.11) | 7.61 (6.89–8.40) |
| • 70–74 | 57.9 | 58.4 | 3.62 (3.23–4.05) | 4.53 (4.01–5.13) |
| Marital status | ||||
| • Never married | 47.6 | 41.3 | Reference | Reference |
| • Widowed, separated, or divorced | 56.8 | 54.5 | 1.54 (1.39–1.71) | 1.06 (0.95–1.19) |
| • Married or common law | 60.1 | 56.5 | 1.77 (1.61–1.95) | 1.27 (1.14–1.42) |
| No. of years since immigration | ||||
| • 0–9 y | 34.1 | 43.7 | Reference | Reference |
| • ≥ 10 y | 59.9 | 58.4 | 3.10 (2.23–4.19) | 1.48 (1.07–2.05) |
| • Not an immigrant | 57.9 | 54.3 | 2.91 (2.18–3.88) | 1.43 (1.04–1.96) |
| Educational attainment | ||||
| • Less than secondary school | 55.5 | 54.1 | Reference | Reference |
| • Secondary school graduation | 59.4 | 54.3 | 1.17 (1.05–1.29) | 1.19 (1.06–1.33) |
| • Postsecondary graduation | 57.8 | 55.1 | 1.07 (0.98–1.17) | 1.24 (1.12–1.37) |
| Household income | ||||
| • < $20 000 | 50.0 | 47.6 | Reference | Reference |
| • $20 000–$39 999 | 57.9 | 54.5 | 1.40 (1.26–1.56) | 1.31 (1.17–1.46) |
| • $40 000–$59 999 | 59.6 | 56.8 | 1.51 (1.35–1.69) | 1.50 (1.33–1.69) |
| • $60 000–$79 999 | 60.1 | 53.0 | 1.53 (1.36–1.73) | 1.69 (1.47–1.93) |
| • ≥ $80 000 | 58.4 | 55.9 | 1.42 (1.28–1.57) | 1.96 (1.73–2.22) |
| Regular doctor | ||||
| • No | 32.6 | 28.5 | Reference | Reference |
| • Yes | 59.9 | 56.9 | 3.37 (3.00–3.77) | 3.30 (2.90–3.73) |
| No. of years since last physical checkup | ||||
| • > 2 y | 39.0 | 32.0 | Reference | Reference |
| • 1–2 y | 61.9 | 58.4 | 2.74 (2.10–3.59) | 2.40 (1.80–3.22) |
| • < 1 y | 66.8 | 64.5 | 2.07 (1.58–2.72) | 3.06 (2.30–4.08) |
| No. of years since last Papanicolaou test | ||||
| • > 5 y | 47.7 | 42.2 | Reference | Reference |
| • 3–5 y | 46.9 | 43.8 | 0.96 (0.85–1.09) | 1.11 (0.97–1.26) |
| • < 3 y | 64.3 | 60.8 | 2.15 (1.99–2.33) | 3.47 (3.18–3.79) |
| BMI category | ||||
| • Obese (≥ 30.0 kg/m2) | 57.9 | 54.3 | Reference | Reference |
| • Overweight (25.0–29.9 kg/m2) | 61.2 | 57.8 | 1.18 (1.08–1.28) | 1.09 (0.99–1.19) |
| • Normal weight (18.5–24.9 kg/m2) | 56.1 | 54.0 | 0.93 (0.85–1.00) | 0.96 (0.88–1.05) |
| • Underweight (< 18.5 kg/m2) | 45.1 | 37.6 | 0.58 (0.47–0.73) | 0.63 (0.50–0.81) |
| Frequency of alcohol consumption | ||||
| • ≥ 4 times per wk | 63.9 | 57.7 | Reference | Reference |
| • 1–3 times per wk | 60.3 | 55.0 | 0.85 (0.76–0.96) | 1.06 (0.94–1.20) |
| • < 3 times per mo | 56.4 | 54.3 | 0.71 (0.64–0.79) | 0.90 (0.80–1.01) |
| Smoking status | ||||
| • Daily | 45.5 | 44.5 | Reference | Reference |
| • Occasionally | 51.6 | 46.7 | 1.32 (1.10–1.59) | 1.41 (1.16–1.73) |
| • Not at all | 60.4 | 56.8 | 1.92 (1.77–2.09) | 1.73 (1.59–1.90) |
| Region | ||||
| • Ontario | 59.2 | 55.5 | Reference | Reference |
| • British Columbia | 59.1 | 56.3 | 0.99 (0.89–1.10) | 1.02 (0.91–1.14) |
| • Alberta | 62.0 | 60.6 | 1.14 (1.01–1.29) | 1.12 (0.98–1.27) |
| • Saskatchewan | 51.8 | 48.8 | 0.74 (0.64–0.85) | 0.71 (0.61–0.83) |
| • Manitoba | 54.5 | 54.2 | 0.81 (0.71–0.94) | 0.78 (0.67–0.91) |
| • Quebec | 56.2 | 50.7 | 0.93 (0.85–1.02) | 0.97 (0.88–1.07) |
| • New Brunswick | 56.5 | 51.1 | 0.97 (0.83–1.14) | 0.98 (0.83–1.16) |
| • Nova Scotia | 55.7 | 54.7 | 0.88 (0.75–1.04) | 0.90 (0.76–1.07) |
| • Prince Edward Island | 59.0 | 55.1 | 0.98 (0.76–1.28) | 0.95 (0.72–1.26) |
| • Newfoundland and Labrador | 59.9 | 57.5 | 1.14 (0.95–1.38) | 1.17 (0.96–1.43) |
| • Territories | 43.0 | 43.8 | 0.51 (0.40–0.65) | 0.60 (0.46–0.78) |
BMI—body mass index, CCHS—Canadian Community Health Survey, OR—odds ratio.
↵* Women who reported that they had had a mammogram less than 2 y ago and selected age, having regular checkups or routine screening, having family history of breast cancer, or using hormone replacement therapy as reasons for having a mammogram were considered screening participants.
↵† Women whose responses were “don’t know,” “refused,” or “not stated” to the questions asking if they ever had a mammogram and when was the last time they had a mammogram were excluded.
↵‡ Data for 16 858 women aged 40–74 in the 2012 CCHS data set.
↵§ Data for 16 858 women aged 40–74 weighted to represent 7.1 million women aged 40–74 in the same age range.
↵‖ Adjusted for age, marital status, and household income.