國內婦女隨著生活型態及飲食習慣西化改變，罹患乳癌的平均年齡逐漸年輕化，好發年齡約比歐美國家年輕 十歲，為我國婦女癌症發生率之第一位。本研究針對45-75 歲婦女乳房攝影報告，對可能影響乳癌之危險因子進 行統計分析。 本研究採用台灣地區2013 年七月到2014 年六月國民健康署婦女檢查表資料，有效樣本數2,770 位，陽性追 蹤數187 位，將187 位陽性報告者分為45-55 歲、56-65 歲、66-75 歲三個年齡層，統計各年齡層之哺乳史、身體 質量指數(Body Mass Index，BMI)、家族史、疾病史、用藥史、乳腺密度之多變數關係。結果呈現45-55 歲年齡 層陽性追蹤者較其它兩個年齡層高，顯示乳癌陽性發生率漸趨年輕化，而具有家族史、疾病史、用藥史、BMI>24、 生產年齡在30 歲後、停經年齡50 歲後、教育程度大學以下之婦女p 值<0.05，屬於罹患乳癌的高風險族群。 本研究使用統計分析，評估可能造成乳癌危險因子之變數，由統計結果發現具多個危險因子會致使乳癌發生 率增加。期望藉本研究鼓勵具有乳癌危險因子之婦女定期接受乳房X 光攝影檢查，以期達到早期發現早期治療目標。

With the change of lifestyle and eating habits in domestic women, the average age of breast cancer was gradually younger, in women about ten years younger than the United States and Europe. Because of the high incidence, we studied mammography report for women the age was 45 to 75, which may affect the risk factors for breast cancer was analyzed. In this study we collected 2770 females who participated in the project of mammography screening which is provided by National Health Promotion Administration from July 2013 to June 2014.included 187 women result is positive, and we according to age will be divided into 45 to 55 years old, 56 to 65 years old, 66 to 75 years old, and to statistics the risk of breast cancer of each age about lactation history, body mass index (BMI), family history, medical history, medication history, and breast density. The results presented the report that was positive and age is 45 to 55 have higher positive incidence than other ages. And woman who have family history, medical history, medication history, BMI>24, and breast density, Production after 30, menopause after age 50, and education below College were the high rise groups of breast cancer (p<0.05). This study used multivariate analysis to assess the incidence of risk factor of breast cancer, we found women that have many risk factor will caused incidence of breast cancer. According to the statistical results, to encourage these high risk women to have the screening of mammography on a regular basis, and also indeed helpful for women to have the early diagnosis and treatment.