Table 1. Proportion of all study participants with baseline characteristics.

Characteristics*	Nonantibacterial groups† (N = 118), %	Antibacterial groups† (N = 120), %
Primary caregiver
Male primary caregivers	4.2	4.2
Caregivers born outside of United States	94.1	98.3
Caregivers with high CFU counts on hands‡	35.8	39.4
Household
Antibacterial cleaning and hygiene products used prebaseline	41.5	40.0
Characteristics reported for >1 members of the household
Child in daycare	15.9	17.8
Chronic illness	39.0	37.0
Chronic illness or fair to poor health	61.0	55.8
Symptoms of infection in past 30 days	54.2	54.2
Use of antimicrobial agents in past 30 days§	11.9	11.7
Traveled outside United States in past month	12.8	12.5
Healthcare or daycare occupation	41.0	45.0

*No significant differences in demographic characteristics between persons with or without available cultures or between participants with or without gram-negative bacteria or staphylococci of interest were noted in this study (all p>0.10).
†No significant differences between the antibacterial and nonantibacterial users in any of the characteristics measured were noted (all p>0.05).
‡Culture information was not available at baseline for 20 study participants. High counts were determined by whether the participant had a CFU above the mean for the entire group.
§Information on use of antimicrobial agents use was only gathered from study participants reporting infectious symptoms. Therefore, all persons reporting no infectious symptoms were coded as having "no reported antibiotic use."