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. 2021 Feb 25;23(2):e25404. doi: 10.2196/25404

Table 4.

Husbands’ knowledge about female breast cancer symptoms, risk factors, and preventive measures (N=403).

Question Incorrect answer Correct answer GOFa χ2 (df=2) P value


n (%) 95% CI n (%) 95% CI

Symptoms






The change in women’s breast size is a sign of breast cancer 285 (70.7) 66.7-75.2 118 (29.3) 25.1-33.0 106.784 <.001

Lymphadenopathy is a sign/symptom of breast cancer 162 (40.4) 35.7-44.7 241 (59.6) 55.3-64.3 170.462 <.001

Nipple skin dryness and peeling is a sign of breast cancer 299 (74.2) 70.2-78.2 104 (25.8) 22.0-29.8 175.985 <.001

Nipple discharge is a sign of breast cancer 273 (67.7) 63.5-72.0 130 (32.3) 27.8-36.7 172.263 <.001

Changes in nipple morphology is a sign of breast cancer 268 (66.5) 61.8-71.1 135 (33.5) 29.0-38.0 167.29 <.001
Risk factors






Use of contraceptives is a possible risk factor for breast cancer 333 (82.6) 78.9-85.9 70 (17.4) 14.4-20.8 150.02 <.001

Hormonal replacement therapy may predispose women to breast cancer 338 (83.9) 80.1-87.1 65 (16.1) 13.2-19.6 275.275 <.001

Overexposure to radiation may predispose women to breast cancer 160 (39.7) 35.2-44.7 243 (60.3) 55.6-64.5 209.037 <.001

Cigarette smoking is a risk factor for breast cancer among women 144 (35.7) 31.0-40.2 259 (64.3) 60.3-68.7 195.042 <.001

Women may develop breast cancer due to hereditary factors 123 (30.5) 26.1-35.0 280 (69.5) 65.3-73.9 260.164 <.001

Older age is a factor that enhances the chance of developing breast cancer among women 259 (64.3) 59.6-68.7 144 (35.7) 31.5-40.0 59.201 <.001
Protective factors






Natural breastfeeding may prevent against developing breast cancer among women 103 (25.6) 21.8-29.8 300 (74.4) 70.5-78.2 326.298 <.001

Regular sports/exercise may protect against breast cancer 128 (31.8) 27.4-36.3 275 (68.2) 63.8-72.2 258.169 <.001

Early conception before the age of 30 years may reduce the chance of getting cancer among women 325 (80.6) 77.2-84.6 78 (19.4) 15.4-22.8 258.854 <.001

A balanced and healthy diet may reduce the chance of developing breast cancer among women 123 (30.5) 26.3-35.7 280 (69.5) 65.3-73.7 277.97 <.001

aGOF: goodness of fit.