Fig. 2.

Variables and calculations related to the reconstruction of the morbidity pyramids. Variables A–F denote the following general probabilities, which are common for all pathogens: A probability of visiting a GP if having bloody diarrhea; B probability of having to submit a stool sample to a GP if having bloody diarrhea; C probability of visiting a GP if having non-bloody diarrhea; D probability of having to submit a stool sample to a GP if having non-bloody diarrhea; E probability of submitting a stool sample if hospitalized; F probability that a positive test result is reported. Variables G–J denote the following pathogen-specific probabilities: G probability of the submitted stool sample being analyzed (GP); H probability of the submitted stool sample being analyzed (hospital); I probability that the test will detect pathogen; J probability of having bloody diarrhea. p denotes an indexation of the pathogens. GP general practitioner