Table 3.

Comparison of the parasite prevalence, parasite density and the MOI in different age groups and haemoglobin (Hb) phenotypes

	Age groups			P	Hb type		P
	1-3	4-6	7-9		AA	AS
	N = 137	N = 96	N = 80		N = 255	N = 58
Parasite prevalence n(%)
Microscopy	5 (3.5%)	11 (11%)	11(14%)	0.018	19 (7.5%)	8 (13.5%)	NS
PCR	12 (8.8%)	18 (17%)	21(26%)	0.002	40 (15.5%)	11 (19%)	NS
Geometric mean parasite density (p/μl)	1,246	3,442	3,024	NS	4,052	2,081	NS
Mean MOI	1.3	1.3	1.2	NS	1.3	1.4	NS
Proportion of multiple infections*	4/12(33.3%)	5/18(27.8%)	4/21(19%)	NS	8/40(19%)	3/11(27%)	NS

* Proportion of multiple infections in PCR positive samples, NS non significant