TABLE 5 .

International reports of breast cancer risk factors

Report	Induced abortion	Oral contraceptive use	Older age	Family history of breast cancer	Delayed child birth	Reduced duration of breast feeding	Cigarette smoking exposure
a. Reports before 2009: Abortion Breast Cancer (ABC) link found in 3 of 5 reports
China (Ye et al. 2002)	0
India (Rai et al. 2008)	+
Iran (Mahouri, Dehghani Zahedani, and Zare 2007)	0	0
Japan (Segi et al. 1957)	+
Russia (Remennick 1989)	+
b. Reports from 2009–2013: ABC link found in 10 of 11 reports
Bangladesh (Jabeen et al. 2013)	4+	1+		2+	↑	↑↑	3+ *
China (Xing, Li, and Jin 2010)	1+			2+
China (Jiang et al. 2012)	2+
China** (Huang et al. 2013)	1+
India (Kamath et al. 2013)	3+				↑
India (Bhadoria et al. 2013)	3+	4+	↑		↑	↑
Iran (Motie et al. 2011)	0			2+		0
Iran (Hajian-Tilaki and Kaveh-Ahangar 2011)	2+				3+	↑
Pakistan (Raza et al. 2011)	2+			1+	1+
Sri Lanka (De Silva et al. 2010)	2+			+/-		↑	↑***
Turkey (Ozmen et al. 2009)	1+	↓	2+	1+

*Current smoking.

**2013 meta-analysis of 36 Chinese reports.

***Passive smoking.

Risk factors for Breast Cancer found to significantly increase (hazardous) or decrease (protective) risk in at least two of above international reports.

Note: 0 (No increase), ± borderline association, ↑ increased risk, ↓ decreased risk. Significant OR reported: 1+ (OR, <2), 2+ (OR, 2 to <4), 3+ (OR, 4 to <8), 4+ (OR, ≥8).