Table 1. Breast cancer awareness by frequency of screening among women — China, 2020.
| Item | Overall | Frequency of screening [% (95% CI)] §§ | |||||
| N |
Rate
[% (95% CI)] |
Never
(n=22,331) |
Screened over 3 years (n=23,573) | Screened within 2 years (n=16,839) | P | ||
| Abbreviation: CI=confidence interval. * identify >3 symptoms. † identify at least 1 non-lump symptom (1.3, 1.4, and 1.5). § identify >2 risk factors. ¶ identify at least 1 changeable risk factor (2.2, 2.4, and 2.5). ** identify at least 1 unchangeable risk factor (2.1, 2.3, and 2.6). †† meet 4, 5.2, and 6, simultaneously. §§ 476 cases are missing. | |||||||
| 1 Breast cancer symptoms | |||||||
| 1.1 Lump in breast | 62,517 | 50.0 (49.6–50.4) | 46.5 (39.9–53.1) | 42.5 (37.4–47.5) | 65.4 (59.6–71.1) | <0.001 | |
| 1.2 Lump under armpit | 62,517 | 42.7 (42.3–43.1) | 40.1 (32.4–47.9) | 34.9 (30.4–39.5) | 57.1 (51.4–62.9) | <0.001 | |
| 1.3 Pulling in of nipple | 62,517 | 37.5 (37.1–37.8) | 34.6 (27.7–41.5) | 30.5 (26.3–34.7) | 51.1 (44.0–57.3) | <0.001 | |
| 1.4 Discharge from nipple | 62,518 | 37.9 (37.5–38.3) | 34.6 (27.6–41.5) | 30.9 (26.8–35.0) | 52.1 (45.9–58.4) | <0.001 | |
| 1.5 Pain in breast | 62,518 | 44.2 (43.8–44.6) | 39.4 (31.6–47.3) | 37.7 (32.8–42.7) | 59.7 (53.2–66.1) | <0.001 | |
| 2 Risk factors related to breast cancer | |||||||
| 2.1 Menarche before age 12 years | 62,519 | 20.8 (20.4–21.1) | 19.7 (14.5–24.9) | 16.8 (13.6–20.0) | 27.7 (22.2–33.2) | <0.001 | |
| 2.2 Reproductive history | 62,519 | 22.5 (22.2–22.9) | 20.9 (15.6–26.3) | 18.1 (15.1–21.2) | 30.9 (26.0–35.8) | <0.001 | |
| 2.3 Menopause after age 55 years | 62,519 | 21.7 (21.3–22.0) | 20.5 (15.2–25.8) | 17.7 (14.7–20.7) | 28.8 (23.6–34.0) | <0.001 | |
| 2.4 Drinking alcohol | 62,517 | 28.6 (28.2–29.0) | 25.6 (19.3–31.9) | 24.0 (21.0–26.9) | 39.1 (33.8–44.5) | <0.001 | |
| 2.5 Taking hormones | 62,519 | 29.7 (29.3–30.0) | 26.1 (19.7–32.5) | 24.8 (21.7–27.9) | 41.2 (35.2–47.2) | <0.001 | |
| 2.6 Family history of breast cancer | 62,517 | 34.7 (34.3–35.1) | 31.5 (24.6–38.3) | 29.4 (25.7–33.0) | 46.6 (39.3–53.9) | <0.001 | |
| 3 Breast self-examination | 62,743 | 20.2 (19.9–20.5) | 8.1 (5.5–10.6) | 13.9 (10.3–17.4) | 45.2 (36.4–54.0) | <0.001 | |
| 4 Knowledge of breast cancer symptoms* | 62,517 | 41.0 (40.6–41.4) | 37.2 (29.9–44.6) | 33.8 (29.5–38.1) | 56.1 (50.2–62.1) | <0.001 | |
| 4.1 Knowledge of non-lump symptoms† | 62,517 | 38.2 (37.8–38.5) | 34.7 (27.8–41.7) | 31.3 (27.2–35.4) | 52.4 (46.2–58.6) | <0.001 | |
| 5 Knowledge of breast cancer risk factors§ | 62,517 | 27.7 (27.3–28.1) | 24.8 (18.7–30.9) | 22.9 (19.9–25.9) | 38.5 (33.1–43.8) | <0.001 | |
| 5.1 Knowledge of changeable factors¶ | 62,517 | 33.4 (33.0–33.8) | 29.6 (22.2–37.0) | 28.3 (25.0–31.6) | 45.7 (39.4–52.0) | <0.001 | |
| 5.2 Knowledge of unchangeable factors** | 62,517 | 37.1 (36.7–37.5) | 33.8 (26.5–41.1) | 31.5 (27.9–35.1) | 49.2 (42.1–56.4) | <0.001 | |
| 6 Breast cancer awareness†† | 62,654 | 10.2 (9.9–10.5) | 3.9 (1.9–6.0) | 6.1 (4.2–8.1) | 24.4 (18.2–30.6) | <0.001 | |