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Table 3 Multivariate adjusted risk factor analysis for malaria infections detected by PCR, using survey logistic regression

From: Epidemiology of forest malaria in Central Vietnam: the hidden parasite reservoir

Cross-sectional survey N = 327 n/N % 95% CI OR 95% CI AOR 95% CI
Overall 74/327 22.6 [18.3; 27.6]    _  
Village        
 Village 1 13/75 16.4 [9.4; 27.0] 1   1  
 Village 2 12/55 18.9 [10.2; 32.0] 1.18 [0.45; 3.11] 1.46 [0.54; 3.92]
 Village 3 25/133 20.2 [13.7; 29.0] 1.29 [0.58; 2.85] 1.49 [0.66; 3.35]
 Village 4 24/64 42.5 [30.3; 56.0] 3.77* [1.64; 8.66] 3.49* [1.51; 8.03]
Ethnic        
 Cadong 24/64 42.5 [30.3; 56.0] 1    
 M’nong 50/263 18.9 [14.3; 25.0] 0.31* [0.17; 0.59] _  
Age groups, years        
 ≤9 26/82 32.3 [22.9; 43.0] 1    
 10-19 18/63 30.7 [20.0; 44.0] 0.93 [0.44; 1.96]   
 20 + 30/182 15.4 [10.6; 22.0] 0.38* [0.20; 0.72] _  
Occupation        
 None (children, disabled) 15/51 30.1 [18.9; 44.0] 1    
 Farmers 33/192 16.5 [11.6; 23.0] 0.46* [0.22; 0.96]   
 Others (officer, business, students) 26/84 32.8 [23.2; 44.0] 1.13 [0.52; 2.48] _  
Bed net availability in household        
 No net 63/254 26.7 [21.3; 33.0] 1   1  
 At least one net 11/73 12.7 [6.8; 22.0] 0.40* [0.19; 0.84] 0.44* [0.20; 0.97]
Wall of house        
 Bamboo wall 3/37 6.1 [1.7; 19.0] 1   1  
 Wood wall 71/290 25.7 [20.7; 31.0] 5.30* [1.40; 20.06] 5.71* [1.47; 22.1]
  1. CI: Confident interval; OR: Odd ratio; AOR: Adjusted odd ratio; *p < 0.05.