Fig. 2From: Identifying children with excess malaria episodes after adjusting for variation in exposure: identification from a longitudinal study using statistical count modelsFractional polynomial plots showing relationships between age, exposure index, and calendar year with numbers of clinical malaria. a Age (in years) was broken down into several blocks. b Exposure index, an estimate for the local prevalence of malaria for individual children. c Calendar years during which the respective clinical data were collectedBack to article page