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Table 7 Multivariate analysis of associations between malaria infection status principally determined by PCR and predictive factors

From: Household clustering of asymptomatic malaria infections in Xepon district, Savannakhet province, Lao PDR

Predictor variables Adjusted odds ratioa Adjusted 95 % confidence interval P value
Individual level variables
 Age (years)
  <5 1.00 Reference  
  5–14 5.17 0.59–45.10 0.137
  ≥15 4.42 0.51–38.52 0.179
 Gender
  Female 1.00 Reference  
  Male 1.14 0.60–2.17 0.689
 Working forest at midnight
  No 1.00 Reference  
  Yes 1.62 0.33–8.09 0.555
 Fever episode in the last 2 weeks
  No 1.00 Reference  
  Yes 1.32 0.39–4.46 0.656
Household level variables
 Person-per-net ratio
  ≤2.5 1.00 Reference  
  >2.5 and <4.0 0.62 0.26–1.49 0.287
  ≥4.0 or no net 0.59 0.19–1.83 0.360
 Number of household members
  <5 1.00 Reference  
  5–7 0.67 0.27–1.68 0.390
  ≥8 0.68 0.24–1.92 0.469
 Household with at least one additional infected member
  No 1.00 Reference  
  Yes 24.33 10.15–58.32 <0.001
  1. aAdjusted for age, gender, working in forest, fever episode, person per net ratio, number of household members, and at least one additional infected member