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Table 2 Univariate predictors of dengue IgM seropositivity in Taiwan

From: Retrospective Seroepidemiology study of dengue virus infection in Taiwan

Characteristics

No. positive/ No. tested

Weighted prevalence (%)

(95% CI)

Odds Ratio

95% CI

*P value

Gender

     

0.009

 Male

10/517

1.21

 

Referent

  

 Female

18/791

2.47

 

2.071

(0.877, 4.889)

 

Age groups (years)

     

0.658

 0–9

10/246

3.70

(3.39, 4.01)

Referent

  

 10–19

0/154

0.61

(0.52, 0.69)

0.159

(0.019, 1.356)

 

 20–29

2/180

1.36

(1.25, 1.48)

0.36

(0.077, 1.683)

 

 30–39

4/196

1.57

(1.46, 1.68)

0.414

(0.099, 1.728)

 

 40–49

5/178

1.56

(1.44, 1.67)

0.411

(0.098, 1.728)

 

 50–59

3/177

2.13

(1.98, 2.27)

0.566

(0.145, 2.410)

 

 60–69

2/119

1.92

(1.65, 2.20)

0.51

(0.091, 2.870)

 

 ≥ 70

2/58

3.47

(3.08, 3.87)

0.936

(0.215, 4.081)

 

Total

 

1.76

(1.74, 1.78)

   

Locality

     

0.766

 Taipei

9/ 494

1.75

 

Referent

  

 Taoyuan

12/ 489

2.18

 

1.252

(0.506, 3.097)

 

 Tainan

7/325

1.50

 

0.855

(0.282, 2.590)

 

Nationality

     

0.582

 Taiwanese

27/1227

1.83

    

 Immigrants

0/21

0

    

Household size

    

0.455

 1–4

13/648

1.66

 

Referent

  

 ≥ 5

10/456

2.28

 

1.402

(0.591, 3.33)

 
  1. CI Confidence interval. Prevalence, Odds Ratio, and CIs are based on weighted data
  2. Missing data: Nationality (n = 60), Household size (n = 205). Percentages determined by excluding those with missing data from the denominator
  3. One sample collected from one 51-year-old male, who lived in Taipei with a household size of four, showed positive for both IgM and IgG