Table 3.

Multivariable models predicting the endotoxin concentration in dust from the living room floor when variables are added to the pet variables

	Model 1 - Pets		Model 2 - Dogs		Model 3 - Cats
Variables	Coefficient (95% CI)	P-value	Coefficient (95% CI)	P-value	Coefficient (95% CI)	P-value
1 pet in home *	0.26 (0.04, 0.49)	0.022	0.27 (0.05, 0.50)	0.018	0.50 (0.18, 0.83)	0.002
≥ 2 pets in home *	0.48 (0.22,0.74)	0.001	0.57 (0.19, 0.95)	0.004	0.26 (−0.11, 0.62)	0.169
Urban home	0.12 (−0.07, 03.30)	0.211	0.11 (−0.08, 0.31)	0.248	0.10 (0.11, 0.62)	0.346
Occupant density	0.39 (0.13, 0.65)	0.003	0.34 (0.08, 0.61)	0.011	0.37 (0.08, 0.66)	0.011
Cleanliness of home	−0.26 (−0.36, −0.16)	0.001	−0.29 (0.40, −0.19)	0.001	−0.25 (−0.36, −0.14)	0.001
Mother smokes	0.27 (−0.02, 0.57)	0.069	0.30 (−0.03, 0.62)	0.073	0.31 (−0.01, 0.64)	0.058
Evidence of vermin in home	0.41 (−0.34, 1.16)	0.286	0.28 (−0.55, 1.11)	0.507	0.57 (−0.26, 1.40)	0.178

^*The reference group for pets in each model are those homes without any pets in the homes. For a pet variable considering ≥1 pet in model 1 the p-value = 0.001; for ≥1 dogs in model 2 the p-value = 0.002; and for ≥1cats in model 3 the p-value = 0.006.