. Author manuscript; available in PMC: 2011 Oct 1.

Published in final edited form as: Int Arch Occup Environ Health. 2009 Dec 6;83(7):771–777. doi: 10.1007/s00420-009-0497-3

Table 3.

Blood lead levels in relation to depression prevalence, Ordinal logistic regression: NHANES 2005-2006

	% no; mild; and severe depression	Crude OR	Adjusted OR I^†	Adjusted OR II^‡
Continuous lead	79.98; 14.36; 5.66	0.99 (0.92-1.06)	1.05 (0.97-1.14)	1.01 (0.94-1.09)
Categorical lead
0-0.88 μg/dL	79.81; 14.39; 5.80	1.00 (reference)	1.00 (reference)	1.00 (reference)
0.89-1.40 μg/dL	79.47; 14.66; 5.86	1.03 (0.82-1.28)	1.22 (0.97-1.53)	1.22 (0.98-1.51)
1.41-2.17 μg/dL	80.07; 14.80; 5.13	0.99 (0.87-1.12)	1.29 (1.10-1.52)	1.25 (1.07-1.47)
2.18-26.4 μg/dL	80.57; 13.58; 5.85	0.97 (0.72-1.30)	1.36 (0.92-2.02)	1.18 (0.83-1.68)

^†

adjusted for age, gender, and ethnicity (n=4,159)

^‡

adjusted for age, gender, ethnicity, education, and PIR (n=3,991)