Fig. 1: Flowchart of the selection and matching of the study population.
From: Asthma and COPD management of patients with intellectual disabilities in general practice
First step: selection of patients with either asthma or COPD. Second step: identification of patients with intellectual disabilities within the groups of patients with asthma or COPD. Third step: matching of patients with intellectual disabilities and asthma or COPD with asthma and COPD patients without intellectual disabilities. Fourth step: selection of patients with medical file information from the first year after diagnosis. GP General Practitioner, ICPC International Classification of Primary Care.
