Table 2. Predictors of group B Streptococcus (GBS) colonization as determined by multivariate analyses.

Characteristics	Multivariate Analysisb OR	95% CI	P
Age
≤18 years	1.0		–
18–40 years	11.97	2.294, 62.508	0.003
≥41 years	14.39	2.655, 77.939	0.002
Gender
Male	1.0		–
Female	1.66	0.519, 5.311	0.39
Cattle exposure in past week	1.20	1.002, 1.447	0.05
Pig exposure in past week	1.07	0.845, 1.200	0.94
Sheep exposure in past week	0.99	0.804, 1.208	0.89
Horse exposure in past week	0.85	0.696, 1.047	0.13

Note: Odds ratios (OR), 95% confidence intervals (95% CI), and P values (P) were estimated using multinomial logistic regression while adjusting for all variables in the table (age, gender and days of exposure in the past week to cattle, sheep, pigs, and horses). Animal exposure variables were included as continuous variables and represent the number of times in the past week in which an individual was near a given animal species.