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)

 IQR = interquartile range ^{¥} CochranArmitage test for agedependent trend in prevalence of asexual parasites (Z = 6.75, P < 0.001). ^{†} Geometric mean of parasite carriers only (parasites/μl). Linear regression for logtransformed asexual parasite density and age groups, β = 1.155; se(β) = 0.147, P < 0.001. ^{¶} CochranArmitage test for agedependent trend in prevalence of gametocytes (Z = 5.91, P < 0.001). ^{‡} Geometric mean of gametocyte carriers only (parasites/μl). Linear regression for logtransformed gametocyte density and age groups, β = 0.123; se(β) = 0.166, P = 0.46.