TABLE 2.

Univariate analysis of risk factors for B. henselae bacteremia or seropositivitya

Risk factorNo. of tested samplesBacteremiaNo. of tested samplesSeropositivity
OR95% CLOR95% CL
Age (mo)
    0-61501.001561.00
    7-12730.8140.43, 1.54731.680.96, 2.96
    13-18280.2990.09, 1.04280.620.27, 1.42
    19+130.2070.03, 1.64142.770.83, 9.21
Neutering status
    Intact male361.00391.00
    Neutered male972.270.79, 6.46991.590.75, 3.37
    Intact female641.730.57, 5.29641.440.64, 3.21
    Neutered female642.820.95, 8.32661.950.87, 4.36
Source
    Friend, self, or breeder961.00981.00
    Stray or shelter1052.221.14, 4.321102.061.18, 3.59
    Store or newspaper371.280.50, 3.29370.420.18, 0.96
Flea infestation
    Never981.00991.00
    Ever1623.841.89, 7.801683.841.89, 7.8
Region
    Washington, D.C.291.00321.00
    Chicago area470.430.09, 2.06480.360.11, 1.15
    Florida933.121, 9.77945.192.14, 12.55
    Southern California952.480.79, 7.80974.141.73, 9.91
Season
    Winter1051.001061.00
    Spring430.690.30, 1.57441.840.88, 3.86
    Summer310.440.15, 1.24310.410.18, 0.95
    Autumn850.620.31, 1.19900.720.41, 1.26
Antibiotics use in past 2 wks
    No2201.002251.00
    Yes251.820.76, 4.35270.660.29, 1.48
Hunting
    No1981.002051.00
    Yes212.841.14, 7.10213.891.27, 11.97
Breed
    Purebred131.00131.00
    Mixed breed2491.840.4, 8.562562.610.78, 8.71
Multiple-cat home
    No761.00771.00
    Yes1500.9830.53, 1.841560.710.41, 1.23
Ever sick
    No1751.001811.00
    Yes811.360.75, 2.48820.950.56, 1.59
Litter box use
    Never111.00111.00
    Occasionally120.8750.16, 4.87120.070.01, 0.75
    Regularly1960.5830.16, 2.082030.120.01, 0.92
Ever bitten
    No2041.002101.00
    Yes281.030.41, 2.56291.10.5, 2.4
Environment
    Indoor1771.001821.00
    Outdoor only or indoor and outdoor501.020.52, 1.98521.190.67, 2.13
  • a Cats with contaminated cultures were not included in the analysis. OR, odds ratio; 95% CL, 95% confidence limits.