Table 4 Prevalence by microscopy, parasite density and factors associated with asymptomatic Plasmodium spp. infection among study participants in Korhogo, northern Côte d’Ivoire and in Kaedi, southern Mauritania, 2014/2015

Overall

10.5 (9.7–11.2)

0.2 (0.1–0.3)

208 (144–307)

 Male

8.1 (7.2–9.0)

1.00

1.00

0.2 (0.1–0.4)

1.00

146 (109–197)^a

 Female

13.8 (12.5–15.2)

1.16 (0.98–1.36)^d

1.06 (0.90–1.26)

0.3 (0.1–0.4)

1.29 (0.52–3.20)

249 (146–449)

  < 1

7.6 (4.4–12.0)^c*

1.00

1.00

–

–

–

 1–4

9.5 (7.6–11.6)

0.77 (0.44–1.35)

0.79 (0.45–1.40)

0.5 (0.2–1.0)

170 (0.60–4.80)

197 (91–482)^b

 5–9

14.1 (12.1–16.2)

0.49 (0.29–0.84)^d

0.51 (0.30–0.87)*

0.2 (0.0–0.5)

0.61 (0.16–2.26)

180 (57–787)

 10–14

13.8 (13.1–16.3)

0.49 (0.28–0.85)^d

0.50 (0.30–0.87)*

0.2 (0.0–0.6)

0.60 (0.13–2.79)

651 (400–857)

 15–19

10.7 (8.5–13.2)

0.69 (0.39–1.22)^d

0.71 (0.40–1.27)

0.1 (0.0–0.6)

0.43 (0.05–3.43

436 (29-465)

  ≥ 20

8.2 (7.1–9.3)

0.94 (0.55–1.60)

0.99 (0.58–1.70)

0.3 (0.1–0.5)

1.00

166 (98–295)

 Rainy

14.1 (12.9–15.3)^c*

0.45 (0.38–0.54)^d

0.45 (0.38–0.53)*

0.1 (0.0–0.2)^c*

1.00

323 (144–455)^a*

 Dry

7.0 (6.1–7.9)

1.00

1.00

0.4 (0.3–0.7)

6.36 (1.87–21.63)^d

193 (140–272)