Table 1.

Demographic Characteristics of Pet Ownership, Pet Sensitization and Pet Allergen Exposure

			Dog						Cat
Variables	Levels		Ownership		Exposure		Sensitivity		Ownership		Exposure		Sensitivity
		n*	% (SE)	p-value	% (SE)	p-value	% (SE)	p-value	% (SE)	p-value	% (SE)	p-value	% (SE)	p-value
Overall		5238	37.9 (1.99)		36.0 (2.21)		12.1 (0.64)		27.5 (1.81)		29.8 (1.76)		12.4 (0.67)
Gender	Male	2586	38.1 (2.20)	0.81	35.7 (2.47)	0.74	13.5 (0.81)	0.005	26.5 (1.76)	0.20	27.3 (1.65)	<0.001	13.4 (0.86)	0.008
	Female	2652	37.7 (2.06)		36.2 (2.22)		10.7 (0.81)		28.5 (2.17)		32.2 (2.14)		11.4 (0.68)
Age	6–18	2008	46.2 (3.66)	<0.001	44.9 (3.48)	<0.001	14.9 (1.02)	<0.001	30.0 (2.46)	<0.001	32.2 (2.38)	<0.001	13.2 (1.39)	0.05
	19–59	2288	38.6 (2.22)		36.3 (2.38)		12.7 (0.80)		29.9 (2.14)		31.4 (2.09)		12.9 (0.71)
	60–85+	942	27.1 (1.73)		25.8 (2.03)		7.2 (0.96)		16.9 (1.73)		21.9 (1.82)		9.8 (1.44)
Race/Ethnicity	Non-Hispanic White	2018	43.6 (2.27)	<0.001	42.3 (2.60)	<0.001	11.2 (0.81)	<0.001	33.5 (2.04)	<0.001	36.4 (1.61)	<0.001	12.7 (0.87)	0.01
	Non-Hispanic Black	1442	13.6 (1.73)		10.1 (1.25)		17.4 (1.24)		6.9 (0.78)		7.4 (0.98)		13.1 (1.62)
	Mexican American	1377	25.4 (2.13)		22.2 (1.79)		10.1 (1.14)		7.8 (1.03)		10.7 (1.20)		9.2 (0.98)
	Other	401	37.0 (3.92)		33.2 (4.27)		13.9 (1.42)		27.0 (3.94)		26.4 (4.94)		11.8 (1.54)
Education	<12th grade	1528	28.8 (3.79)	<0.001	23.6 (3.29)	<0.001	8.6 (0.87)	0.007	18.8 (2.78)	0.01	19.4 (3.38)	0.004	8.9 (1.12)	0.04
	12th grade	1279	43.6 (3.60)		39.2 (3.25)		12.6 (1.04)		26.7 (3.12)		29.5 (2.19)		13.1 (1.68)
	>12th grade	2248	38.4 (2.41)		38.6 (2.55)		13.0 (1.03)		31.4 (2.63)		34.0 (2.05)		13.3 (0.98)
Poverty Index Ratio (PIR)	1st [0 – 1.52]	1999	27.7 (2.88)	<0.001	24.7 (2.90)	<0.001	11.5 (1.18)	0.87	18.2 (2.52)	<0.001	21.1 (2.56)	<0.001	10.8 (1.03)	0.20
	2nd [1.53 – 4.52]	2238	42.1 (2.64)		39.8 (2.63)		12.4 (1.03)		28.0 (2.55)		29.2 (1.89)		12.6 (0.90)
	3rd [4.53 – 5.0]	787	40.7 (3.39)		41.2 (3.64)		12.2 (1.57)		36.4 (3.76)		41.2 (3.06)		13.5 (1.43)
Cotinine	1st [0.01 – 0.02]	1304	36.9 (2.93)	0.26	36.6 (3.36)	0.19	10.9 (1.34)	0.46	25.4 (3.55)	0.38	27.4 (2.80)	0.24	11.5 (1.23)	0.48
	2nd [0.03 – 22.30]	2915	36.6 (2.60)		34.2 (2.66)		12.6 (0.88)		27.2 (2.40)		29.7 (2.55)		12.8 (0.96)
	3rd [22.31 – 1156[	988	41.6 (2.56)		38.9 (2.28)		12.2 (0.95)		30.5 (1.89)		32.6 (1.99)		12.1 (0.75)
Endotoxin	1st [0.017 – 7.97]	1143	25.3 (2.61)	<0.001	19.4 (2.44)	<0.001	11.4 (1.50)	0.52	23.9 (2.62)	0.03	23.0 (1.86)	<0.001	12.3 (1.09)	0.80
	2nd [7.98 – 33.40]	2550	39.3 (2.27)		39.0 (2.46)		11.8 (0.82)		27.7 (2.40)		30.9 (2.38)		12.1 (0.97)
	3rd [33.41 – 4723]	1545	47.6 (2.87)		46.5 (3.43)		13.3 (1.10)		30.8 (2.67)		34.4 (2.87)		13.0 (1.08)

^*Unweighted sample sizes calculated from Exposure/Sensitivity