TABLE 4.

Parameter estimates (multiplicative effect)^a from univariate and multivariate analyses of the effects of determinants on mouse urinary protein concentrations using Tobit regression

Characteristics	Air MUP	Bed MUP	Kitchen MUP
Univariate analyses
Below-average housekeepingb	1.87	2.22	7.02
High occupant density	2.94*	1.34	1.89
Unrenovated development	2.93*	2.01	4.56
Holes in wall/ceilingc	1.00	2.22	2.27
Hot season	1.26	2.63**	5.13*
Hispanic race/ethnicity	0.69	1.10	0.92
Having pets	1.50	2.51**	7.63**
Occupancy ≥2 years	0.44	1.36	5.42*
Caregiver age <30	0.64	0.99	1.09
High cockroach concentration	0.45	1.88	2.37
Multivariate analysesd
Below average housekeepingb	1.62	2.12	6.37
High occupant density	2.98**	1.39	1.92
Occupancy ≥2 years	0.44	1.15	4.93
Having pets	1.59	2.08*	5.76*

^aParameter estimates represent how many times higher the allergen levels are in households with the listed characteristics.

^bBelow-average housekeeping vs. average/above-average housekeeping

^cPresence vs. absence of holes in the wall/ceiling

^dMultivariate parameter estimates calculated with each variable controlling for development and season

*p<0.1

**p<0.05