Table 2.

Logistic regression models for factors associated with elevated (≥5 µg/dL) and very elevated lead levels (≥10 µg/dL).

	Elevated lead levels (≥5 µg/dL)						Very elevated lead levels (≥10 µg/dL)
	Crude		Adjusteda		Adjustedb		Crude		Adjusteda		Adjustedb
	Odds Ratio	95% CI	Odds Ratio	95% CI	Odds Ratio	95% CI	Odds Ratio	95% CI	Odds Ratio	95% CI	Odds Ratio	95% CI
Quintiles of population in poverty
Lowest quintile	1.00		1.00		1.00		1.00		1.00		1.00
Second quintile	1.22	(1.05, 1.40)	1.19	(1.05, 1.35)	1.13	(1.02, 1.25)	1.33	(1.07, 1.67)	1.24	(1.01, 1.52)	1.20	(0.996, 1.45)
Middle quintile	1.41	(1.22, 1.62)	1.28	(1.13, 1.46)	1.17	(1.05, 1.30)	1.66	(1.31, 2.10)	1.42	(1.14, 1.76)	1.31	(1.08, 1.60)
Fourth quintile	1.98	(1.74, 2.26)	1.67	(1.47, 1.90)	1.33	(1.21, 1.48)	2.39	(1.95, 2.94)	1.80	(1.47, 2.20)	1.49	(1.25, 1.79)
Highest quintile	2.62	(2.30, 2.97)	2.08	(1.82, 2.37)	1.44	(1.29, 1.60)	3.33	(2.73, 4.06)	2.26	(1.84, 2.77)	1.64	(1.36, 1.99)
Quintiles of housing built pre-1950
Lowest quintile	1.00		1.00		1.00		1.00		1.00		1.00
Second quintile	1.42	(1.25, 1.60)	1.27	(1.11, 1.45)	1.21	(1.08, 1.35)	1.82	(1.44, 2.30)	1.68	(1.34, 2.12)	1.57	(1.27, 1.95)
Middle quintile	2.06	(1.83, 2.31)	1.67	(1.48, 1.88)	1.46	(1.31, 1.62)	2.64	(2.18, 3.21)	2.05	(1.69, 2.49)	1.78	(1.48, 2.15)
Fourth quintile	2.77	(2.46, 3.10)	2.22	(1.94, 2.53)	1.63	(1.46, 1.82)	3.92	(3.27, 4.71)	3.11	(2.57, 3.76)	2.25	(1.87, 2.71)
Highest quintile	3.63	(3.24, 4.06)	2.88	(2.53, 3.27)	1.92	(1.70, 2.17)	5.47	(4.57, 6.54)	4.18	(3.46, 5.05)	2.69	(2.22, 3.27)

^aAdjusting for gender, age at test, test method, test year, and clustering by block group.

^bAdjusting for gender, age at test, test method, test year, spatial effects of lead poisoning, and clustering by block group.