. Author manuscript; available in PMC: 2017 Aug 16.

Published in final edited form as: Breast J. 2016 Feb 29;22(3):287–292. doi: 10.1111/tbj.12575

TABLE 1.

Trends in the relative proportions of breast carcinoma diagnosed in women aged < and ≥ 40 years

	2000–2003	2004–2007	2008–2011	p value
AGE	ALL BREAST CARCINOMA
<40 YRS	830 (10.8%)	826 (9.4%)	907 (8.7%)	P<0.0001
≥40 YRS	6851 (89.2%)	7920 (90.6%)	9472 (91.3%)
TOTAL	7681	8746	10397
	INVASIVE BREAST CARCINOMA
<40 YRS	735 (11.6%)	713 (9.9%)	796 (9.3%)	P=0.0005
≥40 YRS	5589 (88.4%)	6461 (90.1%)	7765 (90.7%)
TOTAL	1357	1572	1818
	DUCTAL CARCINOMA IN SITU
<40 YRS	95 (7%)	113 (7.2%)	111 (6.1%)	P=0.86
≥40 YRS	1262 (93%)	1459 (92.8%)	17 07 (93.9%)
TOTAL	1357	1572	1818
	DCIS AS A PROPORTION OF ALL BREAST CARCINOMA
<40 YRS	95/830 (11.4%)	113/826 (13.7%)	111/907 (12.2%)	P= 0.8
≥40 YRS	1262/6851 (18.4%)	1459/7920 (18.4%)	1707/9472 (18%)	P=0.98