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Table 2 Adjusted odds ratios (ORs) with 95% confidence intervals (CI) for adherence to annual breast screening by breast screening belief factors for female relatives from the Ontario site of the Breast Cancer Family Registry

From: Beliefs about optimal age and screening frequency predict breast screening adherence in a prospective study of female relatives from the Ontario Site of the Breast Cancer Family Registry

Breast Cancer Beliefs Factors Screening mammogram Adherers vs. Late-screeners Adherers vs. Never-screeners
Adherers (N = 329) Late-screeners (N = 382) Never-screeners (N = 147) Adjusted*OR 95% CI Adjusted*OR 95% CI
Frequency screening mammogram
 Less often (once every  two years or more) 23 (7.0) 97 (26.6) 39 (30.0) 1.00 1.00
 At least once per year 306 (93.0) 267 (73.4) 91 (70.0) 5.02 (2.97, 8.49) 6.82 (3.29, 14.16)
Age start screening mammogram
 ≥50 26 (8.1) 28 (7.6) 11 (7.7) 1.00 1.00
 <50 296 (91.9) 341 (92.4) 132 (92.3) 1.38 (0.75, 2.55) 9.72 (3.26, 29.02)
Importance of Breast Cancer Risk Factors
 High fat diet
 Not at all/Somewhat important 101 (37.5) 144 (44.7) 58 (44.3) 1.00 1.00
 Very/Extremely important 168 (62.5) 178 (55.3) 73 (55.7) 1.22 (0.87, 1.70) 1.23 (0.74, 2.06)
Alcohol use
 Not at all/Somewhat important 172 (63.9) 221 (68.6) 93 (71.0) 1.00 1.00
 Very/Extremely important 97 (36.1) 101 (31.4) 38 (29.0) 1.17 (0.82, 1.67) 1.20 (0.69, 2.07)
Lack of exercise
 Not at all/Somewhat important 105 (39.1) 147 (45.7) 58 (44.3) 1.00 1.00
 Very/Extremely important 164 (60.9) 175 (54.3) 73 (55.7) 1.21 (0.87, 1.68) 1.50 (0.89, 2.52)
Family history of breast cancer
 Not at all/Somewhat important 22 (8.2) 22 (6.8) 10 (7.6) 1.00 1.00
 Very/Extremely important 247 (91.8) 300 (93.2) 121 (92.4) 0.90 (0.47, 1.71) 1.32 (0.45, 3.87)
Likeliness mammogram finding breast cancer
 Not at all/not very likely 122 (37.1) 150 (39.8) 55 (37.9) 1.00 1.00
 Very/somewhat likely 207 (62.9) 227 (60.2) 90 (62.1) 1.10 (0.79, 1.53) 1.24 (0.75, 2.05)
  1. *Adjusted by age at interview, education, visits to health professionals, family risk and were corrected for familial clustering.
  2. p-value = <0.0001.
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