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Table 5 Multivariate analysis of parasite densities among positive asymptomatic subjects observed by cross-sectional survey

From: Inland valley rice production systems and malaria infection and disease in the forest region of western Côte d’Ivoire

  N Positive thick blood smear Geometric mean (95% CI) Unadjusted multiplicative coefficient (95% CI) p-values Adjusted multiplicative coefficient (95% CI) p-values
Agro ecosystem 0.0478   0.401
     R0 8,189 3,940 180 (165–195) 1.00   1.00  
     R1 11,020 4,952 193 (171–217) 1.07 (0.93–1.24) 0.325 0.95 (0.84–1.08) 0.434
     R2 10,121 4,772 206 (194–219) 1.15 (1.03–1.27) 0.013 1.02 (0.93–1.11) 0.694
Age groups (years) < 0.0001   <0.0001
     0–1 1,165 890 895 (755–1059) 1.00   1.00  
     2–4 3,068 2,375 624 (569–684) 0.70 (0.56–0.87) 0.003 0.70 (0.56–0.87) 0.004
     5–9 5,268 3,345 234 (218–251) 0.26 (0.22–0.32) < 0.0001 0.26 (0.22–0.32) <0.0001
     10–19 5,773 2,662 130 (122–138) 0.15 (0.12–0.17) < 0.0001 0.14 (0.12–0.17) <0.0001
     20–39 7,608 2,486 87 (81–94) 0.10 (0.08–0.12) < 0.0001 0.10 (0.08–0.12) <0.0001
     > = 40 6,448 1,906 77 (70–84) 0.09 (0.07–0.10) < 0.0001 0.09 (0.07–0.10) <0.0001
Season 0.0057   0.0085
     Dry 10,537 4,883 171 (159–184) 1.00   1.00  
     Wet 18,793 8,781 208 (190–227) 1.22 (1.07–1.39) 0.006 1.21 (1.05–1.38) 0.009