title: Prevalence of diabetic retinopathy in individuals with type 2 diabetes who had recorded diabetic retinopathy from retinal photographs in Catalonia (Spain).
abstract: OBJECTIVE
  Retinal photography with a non-mydriatic camera is the method currently employed for diabetic retinography (DR) screening. We designed this study in order to evaluate the prevalence and severity of DR, and associated risk factors, in patients with type 2 diabetes (T2DM) screened in Catalan Primary Health Care.
  
  
  METHODS
  Retrospective, cross-sectional, population based study performed in Catalonia (Spain) with patients with T2DM, aged between 30 years and 90 years (on 31 December 2012) screened with retinal photography and whose DR category was recorded in their medical records. DR was classified as: no apparent retinopathy (no DR), mild non-proliferative DR (mild NPDR), moderate NPDR, severe NPDR, proliferative DR (PDR) and diabetic macular oedema (DMO). Non-vision threatening DR (non-VTDR) included mild and moderate NPDR; VTDR included severe NPDR, PDR and DMO. Clinical data were obtained retrospectively from the SIDIAP database (System for Research and Development in Primary Care).
  
  
  RESULTS
  108 723 patients with T2DM had been screened with retinal photography. The prevalence of any kind of DR was 12.3% (95% CI 12.1% to 12.5%). Non-VTDR and VTDR were present in 10.8% (mild 7.5% and moderate NPDR 3.3%) and 1.4% (severe NPDR 0.86%, PDR 0.36% and DMO 0.18%) of the study patients, respectively.
  
  
  CONCLUSIONS
  The prevalence of any type of DR in patients with T2DM screened with retinal photography was lower when compared with earlier studies.
authors.affiliation: Primary Health Care Center Anglès, Gerència Territorial Girona, Institut Català de la Salut, Girona, Spain Unitat de Suport a la Recerca Girona, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Girona, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Rodriguez-Poncelas
authors.affiliation: Primary Health Care Center Martorell, Gerència Territorial Metropolitana Sud, Institut Català de la Salut, Barcelona, Spain Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain.
authors.forename: Sònia
authors.initials: S
authors.lastname: Miravet-Jiménez
authors.affiliation: Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain.
authors.forename: Aina
authors.initials: A
authors.lastname: Casellas
authors.affiliation: Unitat de Suport a la Recerca Girona, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Girona, Spain Primary Health Care Center Jordi Nadal (Salt),Gerència Territorial Girona, Institut Català de la Salut, Girona, Spain.
authors.forename: Joan Francesc
authors.initials: JF
authors.lastname: Barrot-De La Puente
authors.affiliation: Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain Primary Health Care Center Raval Sud, Gerencia d'Atenció Primària Barcelona Ciutat, Institut Catala de la Salut, Barcelona, Spain.
authors.forename: Josep
authors.initials: J
authors.lastname: Franch-Nadal
authors.affiliation: Primary Health Care Center Martorell, Gerència Territorial Metropolitana Sud, Institut Català de la Salut, Barcelona, Spain Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain.
authors.forename: Flora
authors.initials: F
authors.lastname: López-Simarro
authors.affiliation: Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain Primary Health Care Center La Mina, Gerència d'Atenció Primària Barcelona Ciutat, Institut Català de la Salut, Barcelona, Spain.
authors.forename: Manel
authors.initials: M
authors.lastname: Mata-Cases
authors.affiliation: Unitat de Suport a la Recerca Barcelona Ciutat, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain Universitat Autónoma de Barcelona, Bellaterra, Spain, Barcelona, Spain.
authors.forename: Xavier
authors.initials: X
authors.lastname: Mundet-Tudurí
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001786:Blood Glucose / Q000378:metabolism; D003401:Creatine / Q000097:blood; D003430:Cross-Sectional Studies; D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis / Q000453:epidemiology*; D003930:Diabetic Retinopathy / Q000175:diagnosis* / Q000453:epidemiology*; D003941:Diagnostic Techniques, Ophthalmological; D005260:Female; D005919:Glomerular Filtration Rate; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D010781:Photography / Q000379:methods*; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D013030:Spain / Q000453:epidemiology
chemical_list: D001786:Blood Glucose; D003401:Creatine; D006442:Glycated Hemoglobin; C517652:hemoglobin A1c protein, human
keywords: Epidemiology; Retina; Telemedicine