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

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