Fig. 1
From: Design of the PROUD study: PCR faeces testing in outpatients with diarrhoea
Sources and composition of study population of ‘before’ and ‘after’ cohorts. Blue circle: Clinical patient data from Utrecht General Practitioner Network (UGPN) of 2010–2014. Purple circle: faeces testing result from Saltro Diagnostic Center of 2010–2014. 1/2a: UGPN patient with a faeces test. 1/2b: UGPN patient without faeces test. 1a/b: UGPN patients with a coded episode of suspected Infectious Intestinal Disease (IID). 2a/b: UGPN patients without a coded episode of suspected IID. 3a/b: Patients included in microbiological study with/without a coded episode of suspected IID