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Table 4 Univariate regression analysis of CCHF seropositive data generated from subjects belonging to all the districts of Gujarat State

From: Crimean Congo hemorrhagic fever serosurvey in humans for identifying high-risk populations and high-risk areas in the endemic state of Gujarat, India

Risk factors Negative Positive (Percent %) Total Odds ratio 95% CI p-value
Gender
 Male 2373 18 (0.75) 2391 2.8033 1.16–6.72 0.0209*
 Female 2580 7 (0.27) 2587 1   
Age groups
 0 - < 20 498 1 (0.20) 499 1   
 20 - < 40 2126 7 (0.33) 2133 1.6343 0.20–13.31 0.6462
 40 - < 60 1773 14 (0.78) 1787 3.9015 0.51–29.74 0.189
 60 - < 80 542 3 (0.55) 545 2.7565 0.28–26.58 0.3806
 80 - < 100 14 0 14 0   
Subject Category
 A: CCHF affected person/ house/ close contacts 182 17 (8.54%) 199 88.3317 11.68–667.55 < 0.0001*
 F: Abattoir workers 103 1 (0.96%) 104 9.9423 0.61–160.12 0.1053
 B: Neighborhood 824 5 (0.60%) 829 6.2364 0.72–53.48 0.095
 C: Animal grazers 722 1 (0.14%) 723 1.4302 0.08–22.93 0.8004
 E: Farmers 1034 1 (0.10%) 1035 1   
 D: General population 1677 0 1677 0   
 G: Veterinarian 104 0 104 0   
 H: Healthcare personnel 307 0 307 0   
Seropositive Districts
 Ahmedabad 99 1 (1.00%) 100 2.01 0.12–32.47 0.6228
 Amreli 185 11 (5.61%) 196 11.2806 1.44–88.20 0.0209*
 Aravalli 86 3 (3.37%) 89 6.7753 0.69–66.03 0.0996
 Rajkot 98 2 (2.00%) 100 4.02 0.36–44.86 0.2583
 Kutch 98 2 (2.00%) 100 4.02 0.36–44.86 0.2583
 Surendranagar 99 1 (1.00%) 100 2.01 0.12–32.47 0.6228
 Anand 99 1 (1.00%) 100 2.01 0.12–32.47 0.6228
 Kheda 95 1 (1.04%) 96 2.0937 0.12–33.83 0.6027
 Morbi 99 1 (1.00%) 100 2.01 0.12–32.47 0.6228
 Panchmahal 199 1 (0.50%) 200 1.005 0.06–16.17 0.9972
 Devbhoomi Dwarka 200 1 (0.50%) 201 1   
  1. * indicate significant values