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Table 3 Factors associated with the development of respiratory illness as assessed through a logistic regression analysis

From: Determining the burden of secondhand smoke exposure on the respiratory health of Thai children

Factors

Cases

Controls

Crude OR

Adjusted OR

P- value*

 

n /%

n /%

(95% CI)

(95% CI)

 

Household monthly income (US $)

<150

34/ 7.4

12/ 2.6

7.62

3.99

<0.05

(3.41-17.30)

(1.75- 9.10)

151 - 333

272/ 59.0

174/ 37.9

4.21

2.72

<0.05

(2.76-6.42)

(1.70-4.36)

334 - 666

113/ 24.5

160/ 34.9

1.90

1.43

>0.05

(1.21-2.98)

(0.89-2.28)

≥667

42/ 9.1

113/ 24.6

1

1

 

Father’s education level

Grade 6 or less

189/ 41.7

102/ 22.7

4.00

2.07

<0.05

(2.66-6.02)

(1.24-3.44)

Secondary or vocational school

208/ 45.9

219/48.7

2.19

1.36

>0.05

(1.49-3.21)

(0.88-2.12)

Bachelor’s degree and above

56/ 12.4

129/28.6

1

1

 

Mother’s education level

Grade 6 or less

192/ 41.8

120/ 26.2

3.28

1.04

>0.05

(2.20-4.89)

(0.62-1.75)

Secondary or vocational school

207/ 45.1

215/ 46.8

1.99

1.05

>0.05

(1.36-2.91)

(0.68-1.63)

Bachelor’s degree and above

60/ 13.1

124/ 27.0

1

1

 

Child’s exposure in utero to SHS during pregnancy

Yes

147/ 31.8

95/ 20.6

1.80

1.16

>0.05

(1.32-2.46)

(0.83-1.62)

No

315/ 68.2

367/ 79.4

1

1

 

Child’s exposure to smoke while being held by a caregiver

Yes

121/26.2

31/6.7

4.88

3.82

<0.05

(3.22-7.38)

(2.47-5.9)

No

341/73.8

431/93.3

1

1

 

Child’s exposure to SHS outside their home

Yes

39/ 8.4

12/ 2.6

3.46

2.99

<0.05

(1.79-6.69)

(1.45-6.15)

No

423/ 91.6

450/ 97.4

1

1

 
  1. *P-value for adjusted OR, adjusted for household income and parental education.