Fig. 1.

Relationship between parity and dense breast. For premenopausal women, dense breast was shown among 62.6% of nulliparous women, and 57.3% of women with single parity, 47.3% for women with two parity, and 37.6% for women with more than two parity. In contrast, for postmenopausal women, dense breast was shown among 41.6% of nulliparous women, and 31.1% of women with single parity, 19.3% for women with two parity, and 10.1% for women with more than two parity