TABLE II.

Estimated prevalences and odds ratios for the independent predictors of high allergen burden^*in US homes (NSLAH, 1998-1999)

Predictor	Percentage (SE)	OR (95%CI)†	p-value‡
Race
White	19.84 (2.14)	2.64 (1.50, 4.63)	<0.01
Other	10.94 (1.80)	1.00
Family income			<0.01
$0 - 19,999	22.56 (4.71)	1.84 (0.85, 3.98)
$20, 000 - 39,000	23.87 (3.46)	2.44 (1.14, 5.22)
$40,000 - 59,000	11.53 (2.96)	0.72 (0.30, 1.74)
$60,000+	12.12 (2.96)	1.00
Housing type			0.04
Single family home	19.06 (2.01)	1.94 (1.02, 3.67)
Multi-family home	11.36 (2.32)	1.00
Child resident(s)			0.01
No	19.43 (1.92)	1.65 (1.16, 2.34)
Yes	15.95 (2.36)	1.00
Smoker(s) in the household			<0.01
Yes	23.47 (2.01)	1.74 (1.19, 2.53)
No	13.23 (2.01)	1.00
Mold/moisture problems§			<0.01
Yes	24.21 (2.63)	2.06 (1.28, 3.30)
No	11.76 (1.80)	1.00
Pets in the household			<0.01
Yes	24.82 (2.55)	2.98 (1.67, 5.31)
No	11.31 (2.19)	1.00
Cockroaches§			0.05
Yes	24.12 (4.65)	1.80 ( 1.00, 3.24)
No	16.73 (1.84)	1.00
Rodents§			0.01
Yes	26.01 (4.33)	1.75 (1.15, 2.66)
No	16.55 (1.77)	1.00

^*4 or more allergens exceeding elevated levels in the household; cut points for elevated allergen levels: 10 μg/g for Der f 1, Derp 1, and Can f 1; 8 μg/g for Fel d 1; 8 U/g Bla g 1; 1.6 μg/g for MUP; and 7 μg/g for Alternaria

^†Odds ratio adjusted for each variable in the table

^‡Wald F test

^§Assessed by observation (occupants, field team)