Table 5 Multivariable analysis and factors association with respiratory symptoms of the unexposed group (n = 228)

Sex

Male

Female

40

1

149

38

10.2(1.4–76.5)

1

6.26(0.79–49.33)

1

Family No

≤ 3

> 3

7

34

96

91

1

5.12(2.16–12.14)

1

2.75(1.1–7.19)

< 0.05

Educational level

Primary

Secondary

Diploma &above

28

10

3

106

61

20

1.76(0.49–6.35)

1.1(0.27–4.37)

1

1.47(0.35–6.21)

0.93(0.21–4.18)

1

Income

≤4300 > 4300

13

28

133

54

5.31(2.55–11.0)

1

3.3(1.49–7.4)

1

< 0.05