Table 4.

Mean number of helminth, protozoan and combined species (species richness) harboured per subject by region, age and sex

	Helminths	Protozoa	Combined
Region
western Asia	0.085 ± 0.009	0.166 ± 0.013	0.251 ± 0.016
eastern Asia	0.074 ± 0.009	0.105 ± 0.012	0.178 ± 0.016
northern & Saharan Africa	0.058 ± 0.020	0.290 ± 0.054	0.348 ± 0.056
sub-Saharan Africa	0.049 ± 0.020	0.163 ± 0.042	0.211 ± 0.049
Age (Age range)
Age class 1 (16–22)	0.116 ± 0.021	0.201 ± 0.028	0.317 ± 0.037
Age class 2 (23–29)	0.092 ± 0.011	0.169 ± 0.016	0.262 ± 0.019
Age class 3 (30–37)	0.061 ± 0.010	0.128 ± 0.015	0.188 ± 0.019
Age class 4 (38–58)	0.058 ± 0.011	0.121 ± 0.019	0.179 ± 0.021
Sex
Male	0.083 ± 0.009	0.161 ± 0.014	0.244 ± 0.017
Female	0.073 ± 0.008	0.140 ± 0.012	0.213 ± 0.015

The highest value in each data-subset is in bold