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Table 7 Crude and adjusted OR in the logistic regression model

From: Risk factors of dengue fever in an urban area in Vietnam: a case-control study

Risk factors

Crude OR

CI 95%

P value

Adjusted OR

CI 95%

P value

Gender

 Male

1

1

 Female

0.68

0.39–1.2

0.176

1.58

0.81–3.06

0.18

Age group

 16–30 years old

1

1

 31–45 years old

0.311

0.15–0.65

0.002

0.43

0.19–0.95

0.038

 46–60 years old

0.284

0.13–0.63

0.002

0.38

0.15–0.91

0.031

 Above 60 years old

0.021

0.003–0.16

< 0.001

0.05

0.01–0.39

0.005

Education

 High school and lower

1

 College and higher

2.48

1.4–4.4

0.002

   

Marital status

 Single

1

 Married

0.24

0.12–0.48

< 0.001

   

Occupation

 Office workers

1

 Farmer

0.38

0.12–1.24

0.11

   

 Pupil/Student

2.77

1.19–6.43

0.018

   

 Unemployed

0.15

0.03–0.75

0.021

   

 Retired

0.13

0.03–0.64

0.012

   

 Other

1.4

0.63–3.1

0.4

   

Average income

1.1

1.04–1.17

< 0.001

Having chronic diseases

 Yes

1

 No

0.38

0.17–0.84

0.017

   

Living district

 Central urban

1

1

 Peripheral

1.26

0.64–2.47

0.49

1.35

0.64–2.84

0.43

 Peri-urban

0.2

0.09–0.44

< 0.001

0.31

0.13–0.75

0.01

Area of living

0.99

0.99–1

0.074

Livestock keeping

 Yes

1

 No

0.41

0.1–1.65

0.21

   

Storing water in the tank without lid

 Yes

1

 No

0.32

0.06–1.6

0.166

   

Storing water in the buckets/barrels

 Yes

1

 No

0.74

0.3–1.8

0.5

   

Knowledge score

1.21

1.09–1.35

< 0.001

1.1

0.97–1.26

0.15

Attitude score

1.47

1.15–1.89

0.002

1.15

0.82–1.6

0.42

Practice score

1.05

0.94–1.18

0.415

0.97

0.84–1.13

0.71

  1. * Using unweighted score, the final model identified the same independent variables as significant with unchanged adjusted OR