Table 2. Associations between screening frequency, potential factors, and breast cancer awareness among women — China, 2020.
| Independent variable | Model 1: breast cancer awareness * | Model 2: knowledge of breast cancer symptom † | Model 3: knowledge of breast cancer risk factor § | Model 4: breast self-examination ¶ | |||||||
| OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | ||||
| Note: All four models are adjusted for age, quadratic term, and cubic term of age. Abbreviation: OR=odds ratio; CI=confidence interval. * In Model 1, the dependent variable is breast cancer awareness (6). † In Model 2, the dependent variable is knowledge of all five breast cancer symptoms (4). § In Model 3, the dependent variable is knowledge of all six breast cancer risk factors (5). ¶ In Model 4, the dependent variable is breast self-examination (3). | |||||||||||
| Frequency of screening (vs. never) | |||||||||||
| Screened over 3 years | 1.99 (1.36–2.91) | <0.001 | 0.98 (0.88–1.09) | 0.69 | 0.99 (0.86–1.13) | 0.83 | 2.03 (1.67–2.46) | <0.001 | |||
| Screened within 2 years | 6.26 (4.36–9.01) | <0.001 | 1.42 (1.24–1.62) | <0.001 | 1.44 (1.23–1.68) | <0.001 | 4.59 (3.76–5.60) | <0.001 | |||
| Occupation (vs. agricultural occupation) | |||||||||||
| Non-agricultural occupation | 1.78 (1.63–1.94) | <0.001 | 1.31 (1.24–1.39) | <0.001 | 1.58 (1.49–1.67) | <0.001 | 1.57 (1.46–1.68) | <0.001 | |||
| Housework/unemployed | 1.24 (1.14–1.36) | <0.001 | 0.93 (0.89–0.98) | 0.003 | 1.10 (1.04–1.16) | <0.001 | 1.20 (1.12–1.27) | <0.001 | |||
| Household income per capita per month (vs. <1,000) | |||||||||||
| 1,000–2,999 | 2.00 (1.43–2.79) | <0.001 | 1.64 (1.50–1.80) | <0.001 | 1.56 (1.40–1.74) | <0.001 | 1.28 (1.07–1.53) | 0.007 | |||
| 3,000 and more | 3.07 (2.19–4.30) | <0.001 | 2.22 (2.01–2.45) | <0.001 | 2.45 (2.18–2.75) | <0.001 | 1.41 (1.17–1.69) | <0.001 | |||
| Education (junior school and higher vs. primary school and lower) | 2.20 (1.83–2.64) | <0.001 | 1.80 (1.69–1.92) | <0.001 | 1.59 (1.48–1.71) | <0.001 | 1.28 (1.14–1.43) | <0.001 | |||
| Pregnancy (vs. never) | |||||||||||
| 1 pregnancy | 1.17 (0.89–1.53) | 0.26 | 1.26 (1.08–1.46) | 0.003 | 1.13 (0.96–1.33) | 0.13 | 1.19 (0.97–1.47) | 0.10 | |||
| 2 pregnancies and more | 1.02 (0.78–1.33) | 0.89 | 1.31 (1.13–1.52) | <0.001 | 1.05 (0.90–1.23) | 0.51 | 1.11 (0.91–1.36) | 0.31 | |||
| Smoking (smoker vs. non-smoker) | 0.75 (0.48–1.18) | 0.21 | 0.70 (0.57–0.86) | <0.001 | 0.71 (0.56–0.91) | 0.006 | 0.90 (0.68–1.18) | 0.44 | |||
| Alcohol (drinker vs. non-drinker) | 1.26 (1.12–1.42) | <0.001 | 1.04 (0.95–1.13) | 0.40 | 1.00 (0.92–1.10) | 0.91 | 1.25 (1.13–1.38) | <0.001 | |||
| Family history of cancer (Yes vs. No) | 1.25 (1.16–1.34) | <0.001 | 1.30 (1.24–1.36) | <0.001 | 1.16 (1.10–1.22) | <0.001 | 1.24 (1.17–1.32) | <0.001 | |||
| Professional recommendation (Yes vs. No) | >3.34 (3.13–3.57) | <0.001 | 1.29 (1.23–1.36) | <0.001 | 1.30 (1.24–1.37) | <0.001 | 5.62 (5.32–5.93) | <0.001 | |||
| Interaction between household income and screening frequency (vs. low × never) | |||||||||||
| Middle × screened over 3 years | 1.02 (0.69–1.51) | 0.94 | 1.03 (0.91–0.16) | 0.65 | 1.21 (1.05–1.40) | 0.009 | 0.93 (0.75–1.15) | 0.51 | |||
| Middle × screened within 2 years | 0.77 (0.53–1.12) | 0.17 | 1.07 (0.94–1.24) | 0.31 | 1.02 (0.87–1.20) | 0.77 | 0.92 (0.74–1.14) | 0.43 | |||
| High × screened over 3 years | 0.86 (0.58–1.28) | 0.47 | 0.93 (0.81–1.05) | 0.24 | 0.94 (0.80–1.09) | 0.39 | 0.86 (0.69–1.07) | 0.17 | |||
| High × screened within 2 years | 0.67 (0.46–0.97) | 0.04 | 1.05 (0.91–1.22) | 0.49 | 0.81 (0.69–0.96) | 0.01 | 0.92 (0.74–1.14) | 0.43 | |||
| Interaction between education and screening frequency (vs. primary school × never) | |||||||||||
| Junior school × screened over 3 years | 0.94 (0.75–1.17) | 0.58 | 1.21 (1.11–1.32) | <0.001 | 1.15 (1.04–1.27) | 0.004 | 1.02 (0.89–1.17) | 0.77 | |||
| Junior school × screened within 2 years | 0.74 (0.61–0.91) | 0.003 | 1.10 (1.00–1.20) | 0.04 | 1.11 (1.00–1.22) | 0.04 | 0.99 (0.87–1.14) | 0.92 | |||