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. 2005 Jun 14;92(12):2102–2106. doi: 10.1038/sj.bjc.6602643

Table 2. Means of mammographic measures in cases and controls according to menopausal statusa.

	Premenopausal women		Postmenopausal women
Variables	Cases	Controls	Cases	Controls
Percent density (%)	45.3 (39.3–51.3)	38.2 (35.2–41.2)	18.2 (13.3–23.2)	16.2 (13.8–18.7)
Dense area (cm²)	27.9 (22.6–33.8)	18.9 (16.7–21.3)	8.6 (5.2–12.9)	5.8 (4.6–7.2)
Total breast area (cm²)	71.7 (65.7–77.9)	68.3 (65.6–71.1)	95.5 (88.7–102.6)	76.6 (73.3–80.0)

^a

Values are means (95% CI).