Table 3.

Pearson correlation coefficients between herbicides^a most frequently detected in house-dust, the Northern California Childhood Leukemia Study, 2001–2007

	Alachlor	Bromoxynil	Chlorthalb	Dicamba	MCPA	Mecopropc	Pendimethalin	Simazine	Trifluralin	2,4-D
Alachlor	1	−0.02	−0.01	<0.01	<0.01	0.02	0.08	0.05	<0.01	<0.01
Bromoxynil		1	0.09d	−0.01	0.01	−0.02	−0.01	0.30e	0.03	−0.01
Chlorthalb			1	−0.01	0.15e	−0.01	−0.01	0.01	0.35e	−0.01
Dicamba				1	0.13e	0.46e	0.15e	−0.01	−0.01	0.44e
MCPA					1	0.01	<0.01	0.05	0.06	0.02
Mecopropc						1	0.05	−0.02	−0.01	0.64e
Pendimethalin							1	−0.01	−0.01	0.01
Simazine								1	0.01	−0.01
Trifluralin									1	<0.01
2,4-D										1

^aNames according to the International Organization for Standardization (ISO)

^bAlso known as DCPA or dacthal

^cAlso known as MCPP

^dp-value < 0.05

^ep-value < 0.001