eTable 3. Factors affecting willingness to be screened.
| Independent factors | Estimated participation rate (willingness to be screened = yes). adjusted for all model variables (95% confidence interval) |
Odds ratio (95% confidence interval) |
p value |
|---|---|---|---|
| Leaflet | |||
| Old leaflet (reference) | 0.86 (0.77–0.92) | ||
| New leaflet | 0.85 (0.75–0.91) | 0.99 (0.92–1.07) | 0.814 |
| Marital status | |||
| Unmarried (reference) | 0.85 (0.71–0.93) | ||
| Married | 0.86 (0.78–0.91) | 1.11 (0.43–2.85) | 0.827 |
| Living circumstances | |||
| Living alone (reference) | 0.81 (0.58–0.93) | ||
| Not living alone | 0.86 (0.79–0.91) | 1.50 (0.45–4.94) | 0.506 |
| Highest educational attainment | 0.045 | ||
| None/primary school (reference) | 0.84 (0.68–0.93) | ||
| Middle school | 0.89 (0.80–0.95) | 1.68 (0.53–5.28) | 0.376 |
| High school | 0.88 (0.77–0.94) | 1.41 (0.44–4.46) | 0.563 |
| University | 0.72 (0.56–0.84) | 0.43 (0.14–1.33) | 0.143 |
| Main factor in decision | 0.227 | ||
| Personal experience (reference) | 0.83 (0.70–0.91) | ||
| Doctor’s recommendation | 0.89 (0.80–0.94) | 1.71 (0.65–4.47) | 0.278 |
| Other | 0.81 (0.69–0.89) | 0.83 (0.34–2.19) | 0.714 |
| Knowledge score (1–10). per point | 0.91 (0.75–1.10) | 0.327 | |
| Self-assessed knowledge (1–4) | |||
| …about risks Not at all informed A little bit informed Fairly well informed Very well informed |
0.98 (0.86–1.00) 0.86 (0.73–0.93) 0.74 (0.59–0.85) 0.91 (0.48–0.99) |
0.12 (0.02–0.74) 0.04 (0.01–0.40) 0.23 (0.01–5.16) |
0.059 0.022 0.045 0.128 |
| …about benefits Not at all informed A little bit informed Fairly well informed Very well informed |
0.59 (0.15–0.92) 0.68 (0.49–0.83) 0.91 (0.83–0.96) 0.88 (0.68–0.96) |
1.71 (0.20–14.42) 11.17 (1.05–118.5) 7.7 (0.55–108.6) |
0.007 0.621 0.045 0.128 |
| Personal experience of breast cancer (broken down by new vs. old leaflet) | 0.014 (between subgroups) |
||
| New leaflet: None (reference) In acquaintances In relatives or self |
0.82 (0.64–0.93) 0.83 (0.71–0.90) 0.97 (0.77–1.00) |
1.01 (0.33–3.13) 7.09 (0.70–71.83) |
0.983 0.097 |
| Old leaflet: None (reference) In acquaintances In relatives or self |
0.88 (0.66–0.96) 0.89 (0.79–0.94) 0.72 (0.49–0.88) |
1.12 (0.25–4.95) 0.31 (0.06–1.65) |
0.862 0.171 |
Multivariate logistic regression with the criterion “willingness to be screened” (no=0. yes=1); restricted to native German speakers (n = 300)