Self-reported exposure to pesticides in residential settings and risk of breast cancer: a case-control study

Table 6 Exposure to one or more different types of pesticides

Number of pesticides exposed to	Cases n = 446 (%)	Control n = 758 (%)	Adjusted OR*	95% CI
No exposure to any type of pesticide (never said yes)	143 (32.0)	229 (30.2)	__	__
Exposure to one type of pesticide only	141 (31.5)	285 (37.6)	0.98	0.64-1.52
Exposure to two different types of pesticides	64 (14.3)	96 (12.7)	1.45	0.80-2.61
Exposure to three different types of pesticides	50 (11.2)	78 (10.3)	1.25	0.70-2.25
Exposure to four different types of pesticides	32 (7.2)	52 (6.9)	0.75	0.36-1.57
Exposure to five to seven different types of pesticides	17 (3.8)	18 (2.4)	2.21	0.80-6.09
TREND TEST	p-value⁺ 0.31

* Adjusted for age at the time of diagnosis, race, religion, level of education, family history of breast cancer, body mass index, age at menopause and age at menarche.
⁺significant p value defined as < 0.05
CI, confidence interval; OR, odds ratio