Table 3.

Metal concentrations in ADHD cases and controls, odds ratios (OR) and 95% confidence intervals (CIs) of natural-log transformed continuous exposures stratified by location: Inside or outside of the lead investigation area (LIA)

Location		Cases Geometric mean (range)	Controls Geometric mean (range)	Unadjusted OR (95% CI)	Adjusted* OR (95% CI)
Inside	N	27	41
LIA
	Pb (µg/dL)	1.89 (0.54–9.99)	1.51 (0.56–6.05)	1.67 (0.79– 3.51)	2.28 (0.95– 5.50)
	Total Hg (µg/L)	0.35 (0.08–2.29)	0.47 (0.09–2.60)	0.56 (0.28–1.14)	0.60 (0.30–1.21)
	Cd (µg/L)	0.02 (0.01–0.41)	0.02 (0.01–8.69)	1.06 (0.77– 1.45)	1.12 (0.80– 1.56)
Outside	N	44	17
LIA
	Pb (µg/dL)	1.02 (0.28–5.76)	0.97 (0.42–2.88)	1.14 (0.45– 2.91)	2.20 (0.64–7.56)
	Total Hg (µg/L)	0.43 (0.08–2.90)	0.37 (0.16–1.25)	1.44 (0.58–3.56)	1.15 (0.42–3.15)
	Cd (µg/L)	0.02 (0.01–4.04)	0.02 (0.01–0.46)	1.03 (0.73–1.44)	0.94 (0.64– 1.39)

^*Adjusted for age, sex, race, and exposure to postnatal environmental tobacco smoke.