Effect of STH and hookworm infections on hemoglobin levels in podoconiosis patients using multivariate regression.

*Interaction term.
**Adjusted for age, sex, occupation and educational status.
The reference group for different categories of geohelminth infections was defined to include the following:
†For any STH infections: Podoconiosis patients uninfected by any species of geohelminth.
††For hookworm infection: Podoconiosis patients uninfected by any species of geohelminth, and patients infected with non hookworm geohelminths.
†††For non-hookworm STH and hookworm: Podoconiosis patients uninfected by any species of geohelminth, and patients infected with only one species.