Skip to main content

Table 1 Characteristics of study participants, by healthcare worker status

From: Seasonal influenza risk in hospital healthcare workers is more strongly associated with household than occupational exposures: results from a prospective cohort study in Berlin, Germany, 2006/07

Exposure (n = 736 unless otherwise specified)

Healthcare workers (N = 250)

Non-Healthcare workers (N = 486)

P (chi-squared, unless otherwise specified)

Age, mean (years)

35.7

39.2

P < 0.001

(Kruskal-Wallis)

Male sex (%)

57 (22.8%)

160 (32.9%)

P < 0.001

Immunisation in current season (2006/07) (n = 736)

104 (41.6%)

153 (31.5%)

0.006

   Immunised 2005/6 (n = 728)

103 (41.7%)

184 (38.3%)

0.37

   Immunised 2004/5 (n = 712)

77 (32.1%)

162 (34.3%)

0.55

   Immunised 2003/4 (n = 696)

53 (22.7%)

132 (28.6%)

0.10

Current smoker at recruitment (n = 726)

99 (40.6%)

125 (25.9%)

P < 0.01

Children at home

87 (34.8%)

144 (29.6%)

0.15

Patient contacts (per typical day)

30.8

Not applicable

 

Contacts at work (per typical day, excluding patients), mean (n = 730)

14.3

13.8

0.021

(Kruskal-Wallis)

Contacts at home (per typical day), mean

2.7

3.5

P < 0.001

(Kruskal-Wallis)

Car owner (n = 727)

199 (80.6%)

352 (73.3%)

0.03

Regular use of public transport (n = 733)

128 (51.6%)

303 (62.5%)

0.005

Preseasonal titer of <40 against A/California/07/2004 (H3N2) among non-vaccinated

97 (69.7%)

269 (79.1%)

0.03