Table 3 Common risk factors among subjects with adult eczema and EAH by multivariate logistic regression

Age (years), quartile

 1 (18–37)

1

1

–

1

1

–

 2 (38–47)

1.57

1.00–2.46

0.052

0.80

0.37–1.74

0.579

 3 (48–60)

1.58

1.01–2.48

0.044

0.91

0.42–1.98

0.810

4 (≧ 60)

1.36

0.88–2.10

0.169

1.46

0.64–3.33

0.357

Residence

 Rural

1

1

–

1

1

–

 Urban

1.39

1.01–1.92

0.045

1.27

0.71–2.27

0.423

Education level

 Low

1

1

–

1

1

–

 Medium

2.49

1.54–4.04

< 0.001

3.31

1.83–5.98

< 0.001

 High

1.45

0.96–2.19

0.078

5.38

2.04–14.18

< 0.001

AFI^a, quartile

 1 (0–2)

1

1

–

1

1

–

 2 (3–4)

1.20

0.80–1.81

0.386

0.90

0.46–1.76

0.747

 3 (5–7)

1.14

0.77–1.67

0.520

1.78

0.89–3.54

0.104

4 (≥ 8)

1.15

0.80–1.64

0.450

1.46

0.82–2.59

0.199

Family history

 No

1

1

–

1

1

–

 Yes

1.39

1.06–1.82

0.017

2.10

1.33–3.34

0.002

Antibiotics use (> 3/year)

 No

1

1

–

1

1

–

 Yes

0.95

0.70–1.29

0.756

1.71

1.08–2.71

0.022

Heating mode

 Wood heating

1

1

–

1

1

–

 Coal heating

1.36

0.86–2.15

0.194

0.73

0.26–2.06

0.547

 Central heating

1.43

0.94–2.18

0.098

1.34

0.50–3.57

0.561