Table 5 Factors associated with self-medication of the adults with self-reported influenza like illness

Age group (years)

0.001

<0.001

 18–39

ref

ref

 40–59

1.30

0.79

2.14

0.311

1.38

0.80

2.38

0.279

  > =60

0.27

0.12

0.60

0.001

0.26

0.11

0.60

0.002

Education

0.064

 Primary or below

ref

 Secondary

2.14

1.12

4.07

0.021

vTertiary or above

2.00

0.98

4.10

0.058

Family income (Hong Kong dollar)

0.014

  < 10000

ref

 10000–20000

2.04

1.05

3.98

0.036

 20000–30000

2.77

1.34

5.75

0.006

 30000–40000

1.06

0.38

2.90

0.918

  > 40000

2.69

1.35

5.37

0.005

Smoking habit

0.022

0.019

 Never smoker

ref

ref

 Ex-smoker

0.41

0.19

0.93

0.033

0.55

0.23

1.31

0.178

 Occasional smoker

0.31

0.08

1.32

0.113

0.30

0.07

1.30

0.107

 Regular smoker

1.70

0.80

3.63

0.169

2.65

1.11

6.34

0.029

Symptoms

 Runny or stuffy nose

1.59

0.99

2.56

0.057

 Sore throat

1.55

0.97

2.49

0.068

1.75

1.04

2.97

0.036

Flu vaccination

 2014/2015 season

0.27

0.11

0.65

0.003