Table 1. Characteristics of study participants and environmental conditions at their places of residence.

Variable (Unit)		All sites	Igurusi	Santylia
Number of participants	N	17280	1947	2003
Sex female	%	53	52	55
Age (years)	Median	17	19	17
	(IQR)	(9–34)	(9–36)	(8–34)
S. haematobium infection prevalence	%	5.3	15.8	0
Infection intensity:
No infection (0 eggs/10 ml)	%	94.7	84.2	100
Light infection (1–49 eggs/10 ml)	%	4.7	12.7	0
Heavy infection (≥50 eggs/10 ml)	%	0.6	3.1	0
HIV infection
No	%	90.9	88.7	91.8
Yes	%	7.0	6.7	5.6
No information	%	2.1	4.6	2.6
SES score	Median	-0.10	-0.09	-0.44
	(IQR)	(-0.57–0.46)	(-0.54–0.48)	(-0.78 –-0.07)
Population density (persons/km2)	Median	442	1739	205
	(IQR)	(221–2122)	(732–2279)	(132–285)
Household with latrine
No	%	2.4	1.0	1.7
Yes	%	97.6	99.0	98.3
Elevation (m)	Median	1579	1193	2025
	(IQR)	(1216–1728)	(1156–1205)	(1982–2066)
LST Day (°C)	Median	33.2	34.6	29.9
	(IQR)	(30.4–33.9)	(34.2–36.2)	(29.3–30.8)
LST Night (°C)	Median	14.0	16.2	11.7
	(IQR)	(11.8–16.0)	(16.0–16.5)	(10.9–12.0)
Rainfall (mm)	Median	1254	1234	1527
	(IQR)	(1156–1605)	(1229–1241)	(1448–1612)
Slope (°)	Median	2.3	1.2	6.6
	(IQR)	(1.3–4.4)	(1.1–1.4)	(6.0–7.3)
Distance to water course (in km)	Median	1.1	0.9	1.3
	(IQR)	(0.7–1.7)	(0.5–1.4)	(0.8–2.1)
EVI minimum	Median	0.17	0.16	0.20
	(IQR)	(0.15–0.20)	(0.15–0.18)	(0.19–0.21)
Distance to Lake Nyasa* (in km)
Below 1	%	1.1	0	0
1–2	%	2.2	0	0
2–4	%	2.5	0	0
4 and above	%	94.2	100	100

Results for all study sites combined, for the site with the highest infection prevalence (Igurusi) and the site without infection (Santylia). IQR = interquartile range, SES = socio-economic status, LST = land-surface temperature, EVI = enhanced vegetation index.

*Distances below 4 km only apply to participants from Kyela site