Title Initial screening for bedwetting: the use of questionnaires and voiding diaries. First results from a National Belgian study Authors S. Karamaria2, N. Ranguelov3, P. Hansen4, V. De Boe5, P. Verleyen6, J. Vande Walle1,2, L. Dossche2, A. Bael7,8 1Department of Pediatric Nephrology, UZ Gent, Ghent, 2Ghent University, 3Department of Pediatrics, Cliniques Universitaires St-Luc, Université Catholique de Louvain, Brussels, 4Department of Pediatrics, CHU Tivoli, La Louvière, 5Department of Urology, UZ Brussel, Brussels, 6Department of Urology, AZ Groeninge, Kortrijk, 7Department of Pediatrics, Pediatric Nephrology, ZNA Koningin Paola Kinderziekenhuis, Antwerp; 8Faculty of Medicine, University of Antwerp, Antwerp Background International guidelines have a consensus that stratification of nocturnal enuresis (NE) into non-monosymptomatic (NMNE) and monosymptomatic (MNE) is mandatory at intake to optimize therapeutic approach. This stratification is based on clinical parameters (presence or absence of Lower Urinary Tract Symptoms (LUTS) respectively). To identify clinical parameters a checklist (Clinical Management Tool (CMT)) and/or voiding diaries based on home recordings can be used. However, these recordings can be time consuming and difficult for the family. Moreover, the added value to the CMT, especially in treatment naïve patients, is rather expert opinion than evidence based. Methods The aim of this study run in 7 Belgian Hospitals, was to document in treatment naïve NE patients >5 years: 1) The prevalence of MNE vs NMNE 2) the added value and correlation of CMT and/or diary in differentiating NE. Two study visits were scheduled: At visit 1 CMT was obtained, after a thorough medical history and basic assessments. If daytime incontinence and/or LUTS were identified, the diagnosis was NMNE. After the 1st study visit, a 2day voiding diary (fluid intake, voiding volumes, incontinence) was registered at home. During the second study visit, this diary was evaluated; if the micturition frequency was >8 or ...