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Table 4 Association of symptoms and chikungunya IgM seropositivity

From: Prevalence of dengue and chikungunya virus infections in north-eastern Tanzania: a cross sectional study among participants presenting with malaria-like symptoms

     Univariate analysis Multivariate analysis
Symptoms n Positive
% (n)
Negative
% (n)
OR (95 % CI) p-value OR (95 % CI) p-value
Fever        
 Yes 381 36.3 (49) 38.2 (332) 0.92 (0.63–1.34) 0.6 - -
 No 622 63.7 (86) 61.8 (536) Reference    
Rash        
 Yes 9 0 (0) 1.0 (9) - - - -
 No 994 100 (135) 99.0 (859) Reference    
Nausea        
 Yes 83 7.4 (10) 8.4 (73) 0.87 (0.43–1.73) 0.6 - -
 No 920 92.6 (125) 91.6 (795) Reference    
Headache        
 Yes 451 68.1 (92) 41.1 (359) 3.03 (2.06–4.46) <0.001 2.90 (1.88–4.48) <0.001
 No 522 31.9 (43) 58.6 (509) Reference   Reference  
Joint pain        
 Yes 381 50.4 (68) 36.1 (313) 1.80 (1.25–2.59) 0.002 1.09 (0.72–1.65) 0.6
 No 622 49.6 (67) 63.9 (555) Reference   Reference  
  1. OR Odds ratio, CI Confident interval