Table 3 Breast MRI examinations
Québec | France | p value χ2 test | |||
|---|---|---|---|---|---|
Proportions | 95% CI | Proportions | 95% CI | ||
Number of examinations per week | |||||
None | 37.8% (14/37) | [22.4–54.2] | 2.3% (3/128) | [0.3–5] | < 0.0001 |
1–10 | 46% (17/37) | [29.1–62.8] | 47.7% (61/128) | [38.9–56.4] | 0.854 |
10–19 | 2.7% (1/37) | [2.8–8.2] | 27.3% (35/128) | [19.5–35.2] | 0.001 |
21–29 | 5.4% (2/37) | [2.2–13.1] | 10.2% (13/128) | [4.8–15.5] | 0.376 |
≥ 30 | 8.1% (3/37) | [1.1–17.3] | 12.5% (16/128) | [6.7–18.3] | 0.461 |
Number of preoperative examinations | |||||
0–24% | 61.9% (13/22) | [39.2–84.6] | 41% (50/122) | [32.1–49.8] | 0.096 |
25–49% | 19% (4/22) | [0.7–37.4] | 36.9% (45/122) | [28.2–45.6] | 0.139 |
50–74% | 4.8% (1/22) | [5.2–14.7] | 13.1% (16/122) | [7.0–19.2] | 0.468 |
≥ 75% | 4.8% (1/22) | [5.2–14.7] | 4.1% (5/122) | [7.0–19.2] | 1.000 |
Unsure | 9.5% (2/22) | [4.2–23.2] | 4.9% (6/122) | [1.0–8.8] | 0.396 |