| Â | Univariate | Adjusted model 1 | Adjusted model 2 | Adjusted model 3 |
|---|
HR (95% CI) | P | HR (95% CI) | P | HR (95% CI) | P | HR (95% CI) | P |
|---|
Mammography behaviour |
 Screeners | 1.00 (reference) |  |  |  |  |  |  |  |
 Non-screeners | 1.89 (1.22–2.94) | 0.005 | 1.77 (1.12–2.77) | 0.014 | 1.48 (0.94–2.31) | 0.088 | 1.44 (0.92–2.25) | 0.113 |
 Unaware | 2.90 (1.69–4.98) | <0.001 | 1.80 (0.99–3.27) | 0.054 | 1.58 (0.89–2.79) | 0.118 | 1.58 (0.89–2.79) | 0.118 |
- Hazard ratios (HR) and 95% confidence intervals (CI) were estimated using Cox regression models. Adjusted model 1 was adjusted for all patient characteristics significant in the univariate model (except age at first full-term pregnancy, due to collinearity with parity); adjusted model 2 was adjusted for disease characteristics significant in the univariate models and patient characteristics that remained significant in adjusted model 1; adjusted model 3 was adjusted for treatment characteristics significant in the univariate models and patient and disease characteristics that remained significant in adjusted model 2. Refer to Additional file 1: Table S4 for HR and 95% CI of all variables in the models
