Table 3 Rate of active participant in the 2014/2015 G-GrippeNet cohort depending on characteristics, and factors associated with active participation (= participation rate > 15 %) in univariate and multivariate logistic regression

Total of active participants

128/153 (84 %)

-

-

-

-

-

-

  < 35

60/74 (82 %)

1

0.32

-

-

-

-

 35 +

67/77 (87 %)

1.56[0.65–3.88]

-

-

 Less than High school

11/16 (69 %)

1

0.09

1

0.15

1

0.13

 High school or more

116/135 (86 %)

2.77[0.80–8.59]

2.41[0.68–7.68]

2.52[0.70–8.11]

 Professional

28/32 (88 %)

1

0.09

1

0.13

1

0.19

 Office work

56/62 (90 %)

1.33[0.32–5.05]

1.41[0.34–1.61]

1.21 [0.28–4.75]

 Other

44/58 (76 %)

0.45[0.12–1.40]

0.51[0.13–1.61]

0.53 [0.14–1.69]

 1st & 2nd

72/87 (83 %)

1

0.68

-

-

-

-

 3rd

52/61 (85 %)

1.20[0.50–3.06]

-

-

 0

63/73 (86 %)

1

0.49

-

-

-

-

  ≥ 1

65/79 (82 %)

0.74[0.30–1.77]

-

-

 No

120/142 (85 %)

1

0.71

-

-

-

-

 Yes

8/10 (80 %)

0.73[0.17–5.10]

-

-

 No

86/107 (80 %)

1

0.03

-

-

1

0.10

 Yes

42/45 (93 %)

3.41[1.12–15.05]

-

2.93 [0.90–13.27]