Table 3

Influenza vaccination coverage of HCWs, RR and adjusted RR of the potential determinants.

Nursing homes characteristics

Vaccination coverage

% (95% CI)

Risk ratio (95% CI)

Unadjusted univariate

Adjusted multivariate

P value

Categories of nursing homes

Private ECR

45.2

(41.4 - 48.9)

1

1

Public ECR

29.8

(27.8 - 31.9)

0.70

(0.64 - 0.76)

0.74

(0.68 - 0.81)

< 0.001

LTCF

30.1

(28.0 - 33.5)

0.66

(0.61 - 0.73)

0.67

(0.62 - 0.74)

< 0.001

Size (number of beds)

150 or more

25.5

(21.7 - 29.4)

1

1

100 to < 150

36.2

(32.7 - 39.7)

1.25

(1.04 - 1.50)

1.21

(1.03 - 1.42)

0.02

50 to < 100

39.6

(37.4 - 41.8)

1.38

(1.17 - 1.62)

1.35

(1.16 - 1.56)

< 0.001

< 50

48.1

(44.1 - 52.2)

1.63

(1.37 - 1.94)

1.54

(1.31 - 1.81)

< 0.001

Free vaccination offered

No

17.0

(6.4 - 27.5)

1

1

Yes

36.8

(35.1 - 38.4)

1.69

(1.20 - 2.37)

1.89

(1.35 - 2.64)

< 0.001

Training or staff meeting organised

No

31.2

(28.6 - 33.7)

1

1

Yes

40.7

(38.3 - 43.1)

1.28

(1.17 - 1.39)

1.20

(1.11 - 1.29)

< 0.001

Vaux et al. BMC Public Health 2010 10:159   doi:10.1186/1471-2458-10-159