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