Fig. 2

Correlation between site level prevalence of severe anaemia (< 8 g/dl) and parasite prevalence in children aged between 1 and 5 years, with 95% confidence intervals. The data is overlaid with a quadratic fit, indicating that parasite prevalence increases by 2.5% (1.8–3.3%) for every 1% increase in anaemia, with the slope decreasing by 0.04% for every 1% increase