Protocol and baseline data for a multi-year cohort study of the effects of different mass drug treatment approaches on functional morbidities from schistosomiasis in four African countries

Table 2 Participant characteristics for the combined cohorts

Characteristics	S. mansoni		S. haematobium
	N = 1373		N = 1070
	n	%	n	%
Schistosome egg-positive children	843	62%^†	281	27%
Female	721	53%	524	49%
Infection intensity of egg-positive children
Light (1–99 epg; 1–49 eggs/10 mL)	439	33%	231	22%
Moderate^a (100–399 epg)	264	20%	NA^a	NA^a
Heavy (≥ 400 epg; ≥50 eggs/ 10 mL)	140	10%	50	5%
Stunting	88	7%	232	22%
Wasting	262	20%	123	12%
Anemia	549	42%	513	50%
Liver Pattern
A	1120	86%	–
B	174	13%	–
C and above	7	<1%	–
	mean	SD	mean	SD
Age (years)	7.5	0.5	7.5	0.5
VO2 (mL/kg/min)	49.0	3.2	50.2	3.4
Portal vein diameter (mm)	7.2	1.1	–
PedsQL Total	84.6	12.7	86.6	19.9
Physical	89.1	16.8	87.4	24.1
Emotional	74.5	15.7	92.9	14.5
Social	91.6	16.5	84.0	27.2
School	80.5	17.5	85.0	15.9

^†Not equal to the sum of light, moderate, and heavy infection prevalence due to rounding
^a S. haematobium intensity is classified as light or heavy; there is no intermediate intensity

ISSN: 1471-2334