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Table 1 Parasitological data at enrolment

From: Plasmodium falciparum gametocyte carriage in asymptomatic children in western Kenya

Age N Asexual parasite prevalence, % (n)¥ Asexual parasite density, mean (IQR) Gametocyte prevalence % (n) Gametocyte density mean (IQR)
<5 years 65 73.8 (48) 2302.4 (530–14149) 33.8 (22) 25.3 (16–32)
5–9 years 211 50.2 (106) 357.8 (120–1040) 10.4 (22) 27.9 (16–32)
10–16 years 250 30.4 (76) 202.7 (80–440) 5.2 (13) 18.8 (16–23)
Total 526 43.7 (230) 444.8 (120–1220) 10.8 (57) 24.5 (16–32)
  1. IQR = interquartile range ¥ Cochran-Armitage test for age-dependent trend in prevalence of asexual parasites (Z = -6.75, P < 0.001). Geometric mean of parasite carriers only (parasites/μl). Linear regression for log-transformed asexual parasite density and age groups, β = -1.155; se(β) = 0.147, P < 0.001. Cochran-Armitage test for age-dependent trend in prevalence of gametocytes (Z = -5.91, P < 0.001). Geometric mean of gametocyte carriers only (parasites/μl). Linear regression for log-transformed gametocyte density and age groups, β = -0.123; se(β) = 0.166, P = 0.46.