Table 4.

Results from linear regression models for MMSE and four pesticides^*.

Pesticide (ng/ml)	β (95% CI)				Direction and test for trend (p-Value)**
	Quartile 1 (referent)	Quartile 2 coefficient (se)	Quartile 3 coefficient (se)	Quartile 4 coefficient (se)
β-HCH	0	0.63 (1.26)	1.26 (1.26)	−0.86 (1.31)		(−), p=0.62
p,p′–DDE	0	1.32(1.27)	−0.38 (1.33)	1.37 (1.27)		(+), p=0.52
p,p′–DDT	0	1.40 (1.24)	1.51 (1.35)	0.88 (1.25)		(−), p=0.75
p,p′–DDT (without 2 outliers)	0	0.38 (1.07)	0.49 (1.17)	−0.44 (1.09)		(−), p=0.09
(referent)	<LOD(referent)	Quartile 1	Quartile 2	Quartile 3	Quartile 4
Dieldrin	0	−2.75 (1.48)	−0.06 (1.35)	0.08 (1.31)	−0.17 (1.36)	(+), p=0.94

^*Adjusted for age (continuous), years of schooling (continuous), and gender. Cutpoints for quartiles given in footnote to Table 3