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Volume 11, Number 10—October 2005

Research

Antibacterial Cleaning Products and Drug Resistance

Allison E. Aiello*Comments to Author , Bonnie Marshall†, Stuart B. Levy†, Phyllis Della-Latta‡, Susan X. Lin‡, and Elaine Larson‡
Author affiliations: *University of Michigan School of Public Health, Ann Arbor, Michigan, USA; †Tufts University School of Medicine, Boston, Massachusetts, USA; ‡Columbia University, New York, New York, USA

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Table 3

Logistic regression models for examining factors associated with carriage of organisms with antimicrobial resistance or increased triclosan MICs*

Outcome 1 (>1 organism with resistance to antimicrobial agents on hand) OR 95% CI , p value aOR† 95% CI, p value
Baseline characteristics (N = 164)
Antibacterial product use in household‡ 1.16 0.62–2.17, 0.63 0.97 0.50–1.89, 0.91
Observed no. of seconds for handwash by primary caregiver 1.05 1.01–1.09, 0.01 1.05 1.01–1.09, 0.01
Above average log total CFU on hands of primary caregiver after handwash 2.06 1.08–3.93, 0.03 1.81 0.93–3.52, 0.08
Reported no. of hands washes per day for primary caregiver 1.01 0.97–1.04, 0.74
>1 household members with job in healthcare or daycare 1.28 0.68–2.40, 0.44
Year-end characteristics (N = 201)
Antibacterial product use in household 1.44 0.82–2.52, 0.20 1.33 0.74–2.41, 0.34
Observed no. of seconds for handwash by primary caregiver 1.00 0.97–1.04, 0.91
Above average log total CFU on hands of primary caregiver after handwash 0.62 0.35–1.98, 0.09
Reported no. of hands washes per day for primary caregiver 0.94 0.89–0.99, 0.04 0.95 0.89–1.01, 0.10
>1 household members with job in healthcare or daycare
0.51
0.29–0.90, 0.02
0.52
0.29–0.95, 0.04
Outcome 2 (>1 organism with increased triclosan MIC on hand)
OR
95% CI , p value
aOR†
95% CI, p value
Baseline (N = 164)
Antibacterial product use in household‡ 1.59 0.84–3.01, 0.16
Year-end (N = 201)
Antibacterial product use in household 1.73 0.97–3.09, 0.06

*OR, odds ratio; CI, confidence interval; aOR, adjusted odds ratio.
†OR adjusted for all variables that were significant in univariate analyses at p<0.05.
‡Prior reported antibacterial product use was controlled for but did not have any effect on the point estimate. Therefore, "group" point estimates reflect use of antibacterial product after randomization.

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