Table 2.
Likelihood of refusal to participate versus willing to participate in the Radiological Evaluation And Breast Density (READ) study.
| ET | EPT | |||||
|---|---|---|---|---|---|---|
| Unwilling to quit HT | Refuse: Other reason | Overall | Unwilling to quit HT | Refuse: Other reason | Overall | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Age at recruitment | ||||||
| ≤ 55 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 56–60 | 0.89 (0.70, 1.14) | 1.04 (0.79, 1.36) | 0.95 (0.76, 1.18) | 1.03 (0.79, 1.35) | 1.27 (0.93, 1.73) | 1.12 (0.87, 1.43) |
| 61–65 | 0.83 (0.64, 1.07) | 1.13 (0.85, 1.50) | 0.94 (0.74, 1.18) | 0.96 (0.70, 1.32) | 1.33 (0.93, 1.90) | 1.09 (0.82, 1.46) |
| 66–70 | 1.06 (0.80, 1.41) | 0.99 (0.72, 1.37) | 1.04 (0.80, 1.34) | 1.62 (1.08, 2.42) | 1.58 (0.99, 2.51) | 1.60 (1.10, 2.34) |
| 71+ | 1.30 (0.98, 1.73) | 1.90 (1.40, 2.58) | 1.52 (1.18, 1.97) | 1.00 (0.64, 1.59) | 1.85 (1.15, 2.96) | 1.31 (0.87, 1.96) |
| Caucasian | ||||||
| No | 0.98 (0.73, 1.31) | 1.42 (1.05, 1.90) | 1.15 (0.89, 1.49) | 1.01 (0.65, 1.56) | 1.63 (1.06, 2.53) | 1.25 (0.85, 1.84) |
| Yes | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Hispanic | ||||||
| No | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Yes | 0.86 (0.50, 1.50) | 1.46 (0.85, 2.49) | 1.11 (0.69, 1.77) | 1.21 (0.56, 2.60) | 1.18 (0.51, 2.75) | 1.20 (0.59, 2.42) |
| Education | ||||||
| ≤High school | 1.14 (0.87, 1.51) | 1.67 (1.24, 2.25) | 1.35 (1.05, 1.73) | 1.43 (0.97, 2.10) | 1.80 (1.20, 2.71) | 1.57 (1.11, 2.23) |
| Some college | 1.03 (0.82, 1.30) | 1.04 (0.80, 1.34) | 1.04 (0.84, 1.27) | 0.95 (0.73, 1.24) | 1.06 (0.78, 1.43) | 0.99 (0.78, 1.27) |
| College graduate | 1.04 (0.79, 1.38) | 1.10 (0.80, 1.50) | 1.07 (0.83, 1.37) | 1.11 (0.82, 1.51) | 1.05 (0.74, 1.48) | 1.09 (0.83, 1.44) |
| ≥Graduate school | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Self-reported duration of HT use from BSRR at index mammogram | ||||||
| ≤2 years | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 3–4 years | 1.10 (0.69, 1.75) | 0.92 (0.55, 1.56) | 1.02 (0.67, 1.56) | 0.97 (0.66, 1.43) | 1.05 (0.68, 1.60) | 1.00 (0.71, 1.42) |
| 5–9 years | 1.09 (0.73, 1.61) | 0.97 (0.63, 1.50) | 1.04 (0.73, 1.48) | 1.23 (0.87, 1.75) | 0.97 (0.65, 1.43) | 1.13 (0.82, 1.55) |
| 10–14 years | 1.06 (0.72, 1.57) | 1.22 (0.79, 1.87) | 1.13 (0.79, 1.60) | 1.16 (0.80, 1.68) | 1.26 (0.84, 1.88) | 1.20 (0.86, 1.68) |
| 15+ years | 1.22 (0.85, 1.75) | 1.21 (0.82, 1.80) | 1.22 (0.88, 1.68) | 1.21 (0.82, 1.79) | 1.42 (0.93, 2.17) | 1.30 (0.91, 1.85) |
| Body mass index in kg/m2, at index mammogram | ||||||
| <25 | 1.46 (1.18, 1.80) | 1.26 (1.00, 1.59) | 1.37 (1.13, 1.66) | 1.12 (0.84, 1.49) | 1.01 (0.75, 1.38) | 1.07 (0.83, 1.39) |
| 25 to <30 | 1.18 (0.95, 1.47) | 0.94 (0.74, 1.19) | 1.07 (0.88, 1.30) | 1.12 (0.83, 1.52) | 0.80 (0.57, 1.12) | 0.98 (0.75, 1.30) |
| 30+ | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Gail model risk score, lifetime | ||||||
| <15% | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 15 – <20% | 1.10 (0.74, 1.64) | 1.13 (0.74, 1.75) | 1.12 (0.78, 1.60) | 0.65 (0.41, 1.04) | 0.66 (0.39, 1.12) | 0.66 (0.43, 1.00) |
| 20 – <30% | 1.04 (0.59, 1.86) | 0.99 (0.53, 1.87) | 1.03 (0.61, 1.72) | 1.02 (0.46, 2.23) | 0.50 (0.17, 1.46) | 0.81 (0.39, 1.70) |
| ≥ 30% | 0.71 (0.31, 1.66) | 0.71 (0.28, 1.81) | 0.71 (0.34, 1.50) | 0.50 (0.08, 2.99) | 0.37 (0.04, 3.56) | 0.45 (0.09, 2.22) |
| First degree family history | ||||||
| No | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Yes | 1.12 (0.89, 1.40) | 1.10 (0.86, 1.41) | 1.11 (0.90, 1.36) | 0.83 (0.62, 1.11) | 0.64 (0.45, 0.90) | 0.75 (0.57, 0.98) |
| Mammographic breast density at index mammogram‡ | ||||||
| Scattered fibroglandular | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Heterogeneously dense | 1.00 (0.83, 1.20) | 0.94 (0.77, 1.15) | 0.97 (0.82, 1.15) | 1.09 (0.85, 1.39) | 1.22 (0.93, 1.60) | 1.14 (0.91, 1.42) |
| Extremely dense | 1.17 (0.84, 1.63) | 0.90 (0.62, 1.31) | 1.06 (0.78, 1.43) | 0.87 (0.61, 1.25) | 1.03 (0.69, 1.53) | 0.93 (0.67, 1.29) |
OR=Odds Ratio