Table 3.
Univariate analyses and multivariable model of factors associated with ever having a false positive result on a screening mammogram, controlling for total years of follow-up.
| Univariate Models | Multivariable Model | |||
|---|---|---|---|---|
|
| ||||
| Characteristic | OR (95% CI) | p-value | OR (95% CI) | p-value |
|
| ||||
| Age, years | ||||
| Less than 50 | Ref | Ref | ||
| 50 or Older | 1.24 (1.01, 1.53) | 0.0444 | 0.80 (0.62, 1.02) | 0.0749 |
|
| ||||
| Race/Ethnicity | ||||
| Hispanic | 1.12 (0.84, 1.50) | 0.4495 | 1.22 (0.88, 1.71) | 0.2371 |
| Non-Hispanic white | Ref | Ref | ||
| Non-Hispanic black | 0.87 (0.59, 1.29) | 0.4812 | 1.06 (0.69, 1.63) | 0.7855 |
| Other | 0.97 (0.58, 1.63) | 0.8994 | 1.27 (0.73, 2.21) | 0.4076 |
|
| ||||
| Body Mass Index, kg/m2 | ||||
| Underweight | 1.14 (0.55, 2.38) | 0.7226 | 1.26 (0.59, 2.71) | 0.5505 |
| Normal weight | Ref | Ref | ||
| Overweight | 1.05 (0.84, 1.31) | 0.6846 | 1.09 (0.86, 1.38) | 0.4814 |
| Obese | 0.79 (0.63, 0.99) | 0.0404 | 0.88 (0.69, 1.12) | 0.3055 |
|
| ||||
| Screening Frequency | ||||
| Annual | 2.09 (1.64, 2.67) | <0.0001 | 2.18 (1.70, 2.80) | <0.0001 |
| Biennial | Ref | Ref | ||
| Every 3+ Years | 0.71 (0.50, 1.20) | 0.0639 | 0.82 (0.56, 1.19) | 0.2863 |
| First Mammogram | 0.91 (0.55, 1.50) | 0.7144 | 1.43 (0.84, 2.45) | 0.1922 |
|
| ||||
| Breast Density | ||||
| Low Breast Density | Ref | Ref | ||
| High Breast Density | 1.45 (1.19, 1.75) | 0.0002 | 1.64 (1.32, 2.04) | <0.0001 |
|
| ||||
| Breast Cancer Risk Status | ||||
| Low or Average Risk | Ref | Ref | ||
| High Risk | 1.22 (0.99, 1.49) | 0.0585 | 1.14 (0.91, 1.44) | 0.2528 |