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Table 2 Prevalence of parasitaemia and description of parasite density, Magaria, Niger, 2016

From: Prevalence of malaria in an area receiving seasonal malaria chemoprevention in Niger

  High season
survey 1
October 2016
(N = 588)
Low season
survey 1
December 2016
(N = 634)
High season
survey 2
September 2017
(N = 818)
Low season
survey 2
February 2018
(N = 643)
Gender, % (95% CI)
 Male 42.5 36.7–48.5 41.2 36.1–46.4 47.4 42.5–52.4 36.3 31.4–41.6
 Female 43.9 38.0–50.0 39.4 33.8–45.2 45.3 40.7–50.0 31.9 27.0–37.3
Age, % (95% CI)
 3–59 months 51.9* 45.1–58.6 48.1* 41.4–54.9 50.7* 44.8–56.6 39.6* 33.2–46.4
 5–9 years 66.2 57.5–73.9 64.1 56.1–71.3 73.2 66.2–79.2 56.3 48.8–63.6
  ≥ 10 years 23.6 18.6–29.4 21.0 16.6–26.2 29.9 25.4–34.8 14.8 10.9–19.7
Type of SMC in the area, % (95%CI)
 Directly-observed first dose 40.1 35.0–45.4 42.7 36.8–48.8 46.3 42.9–49.8 34.2 30.7–37.9
 Non-directly-observed first dose 47.1 40.3–54.1 38.3 33.4–43.5
Median parasitaemia (parasites/μl), IQR
 3–59 months 6066†§ 1281–26,065 1320 489–4272 3932†§ 459–24,312 797 227–1708
 5–9 years 1516§ 530–5705 576 220–1495 1734§ 495–7380 651 143–1517
  ≥ 10 years 189§ 126–629 103 63–159 168§ 63–676 67 40–173
  1. *Adjusted Wald p < 0.005 between 3–59 m and 5–9y in all four surveys; p < 0.0001 between both groups of children and adults in all four surveys
  2. Kruskall-Wallis p < 0.0001 for age in each survey
  3. §Mann–Whitney p < 0.005 for age groups between high and low-season surveys