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Table 3 Predictors of healthcare workers' self-reported willingness to accept smallpox immunization, results of multivariate analysis

From: Attitudes of healthcare workers in U.S. hospitals regarding smallpox vaccination

  Odds ratio* (95% CI) p-value
Perceived risk of a smallpox attack in U.S. within 2 years   <0.0001
   High/Intermediate 3.2 (2.4, 4.2)  
   Low/Next to zero Ref  
   Can't guess 2.7 (1.7, 4.1)  
Region   0.13
   Northeast Ref  
   Mid-Atlantic & Southeast 1.4 (1.0, 2.0)  
   Midwest & West 1.5 (1.0, 2.3)  
Main work area   0.16
   Emergency Department or ED consult 1.3 (1.0,1.7)  
   Intensive Care Unit or ICU consult Ref  
   Other/none specified 1.4 (0.9, 2.2)  
Profession   0.76
   Physician Ref  
   Non-physician clinician 1.1 (0.8, 1.6)  
   Other/none specified 0.9 (0.6, 1.5)  
Age   0.07
   Up to 29 1.5 (0.9, 2.4)  
   30–39 1.1 (0.7, 1.6)  
   40–49 1.0 (0.7, 1.5)  
   50 or over Ref  
Gender   <0.001
   Female Ref  
   Male 1.4 (1.1, 2.0)  
Ever vaccinated   0.046
   Yes 1.5 (1.0, 2.1)  
   No Ref  
   Not sure 1.1 (0.7, 1.7)  
Informed   <0.001
   Very well 2.0 (1.1, 3.7)  
   Fairly well 1.5 (0.9, 2.4)  
   Not well 1.0 (0.6, 1.7)  
   Not at all Ref  
  1. * adjusted for clustering within hospital and variation in the number of responses per hospital