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Table 3 Univariate analysis of dengue IgG seropositivity in Taiwan

From: Retrospective Seroepidemiology study of dengue virus infection in Taiwan

Characteristics

No. positive/ No. tested

Weighted prevalence (%)

 

Odds Ratio

95% CI

*P value

Gender

     

0.796

 Male

18/517

3.27

 

Referent

  

 Female

266/791

3.52

 

1.082

(0.594, 1.971)

 

Age groups (years)

     

<  0.0001

 0–9

6/246

2.41

(2.15, 2.67)

Referent

  

 10–19

2/154

1.21

(1.09, 1.33)

0.498

(0.082, 3.004)

 

 20–29

3/180

1.62

(1.49, 1.74)

0.666

(0.132, 3.36)

 

 30–39

9/196

3.38

(3.23, 3.54)

1.419

(0.356, 5.652)

 

 40–49

2/178

0.78

(0.69, 0.86)

0.318

(0.047, 2.154)

 

 50–59

2/177

1.23

(0.13, 1.33)

0.504

(0.089, 2.842)

 

 60–69

9/119

8.33

(7.79, 8.88)

3.684

(0.932, 14.555)

 

 ≥ 70

11/58

18.25

(17.41,19.09)

9.046

(2.496, 32.793)

 

Total

 

3.40

(2.30, 4.49)

   

Locality

     

0.001

 Taipei

15/ 494

2.76

 

Referent

  

 Taoyuan

11/ 489

1.81

 

0.651

(0.275, 1.537)

 

 Tainan

18/325

6.64

 

2.504

(1.262, 4.969)

 

Nationality

     

< 0.0001

 Taiwanese

36/1227

3.06

 

Referent

  

 Immigrants

6/21

28.82

 

12.821

(4.180, 39.325)

 

Household size

    

0.302

 1–4

17/648

2.67

 

Referent

  

 ≥ 5

16/455

3.76

 

1.424

(0.725, 2.795)

 
  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