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Table 8 Bivariate analysis of associations between malaria infection status determined by rapid diagnostic tests and predictive factors

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

Predictive factors Positive (n = 21) Negative (n = 849) Positive rate (%) P valuea
n % n %
Individual level factors
 Age (years)
  <15 14 66.7 445 52.4 3.1 0.196
  ≥15 7 33.3 404 47.6 1.7
 Gender
  Female 11 52.4 459 54.1 2.3 0.879
  Male 10 47.6 390 45.9 2.5
 Working forest at night
  No 20 95.2 817 96.2 2.4 0.560
  Yes 1 4.8 32 3.8 3.0
 Fever episode in the last 2 weeks
  No 17 81.0 782 92.1 2.1 0.084
  Yes 4 19.0 67 7.9 5.6
Household level factors
 Person-per-net ratio
  ≤2.5 8 38.1 412 48.3 1.9 0.230
  >2.5 and <4.0 9 42.9 227 26.7 3.8
  ≥4.0 or no net 2 9.5 154 18.1 1.3
  Unknown 2 9.5 58 6.8 3.3
 Number of household members
  <5 0 0.0 119 14.0 0.0 0.171
  5–7 11 52.4 376 44.3 2.8
  ≥8 10 47.6 354 41.7 2.7
 Household with at least one additional infected member
  No 16 76.2 839 98.8 1.9 <0.001
  Yes 5 23.8 10 1.2 33.3
  1. aChi square test or Fisher’s exact test