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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
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