title: Rationale and Methodology for a Community-Based Study of Diabetic Retinopathy in an Indonesian Population with Type 2 Diabetes Mellitus: The Jogjakarta Eye Diabetic Study in the Community.
abstract: There are no available data about diabetic retinopathy (DR) in the Indonesian population. This report summarizes the rationale and study design of the Jogjakarta Eye Diabetic Study in the Community (JOGED.COM), a community-based study to estimate the prevalence and risk factors of DR in persons with type 2 diabetes in Jogjakarta, Indonesia.
  
  
  
  The JOGED.COM aimed to examine a cross-sectional sample of 1200 persons with type 2 diabetes aged 30 years and older residing in the study area. We identified 121 community health centers (CHCs) in Jogjakarta and listed 35 CHCs with non-communicable diseases facilities. Multi-stage, clustered random sampling was used to select 22 CHCs randomly. We included CHCs with coverage population >30,000, and excluded those classified as 100% rural. Lists of persons with diabetes confirmed by their family physician were provided from each CHC. Examinations procedures included detailed interviews, general and eye examinations, anthropometry and body composition scan, and dilated fundus photography.
  
  
  
  We collaborated with local health authorities, family physicians, and local health practitioners in the recruitment phase. A total of 1435 invitations were distributed, and 1184 people (82.5%) with type 2 diabetes participated in this study, of whom 1138 (79.3%) had completed data with gradable retinal images.
  
  
  
  JOGED.COM is the first epidemiologic study of DR in an Indonesian population. This study will provide key information about the prevalence and risk factors of DR in the community. These data are very important for future health promotion programs to reduce the burden of DR in the population.
authors.affiliation: a Department of Ophthalmology , Faculty of Medicine, Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Muhammad B
authors.initials: MB
authors.lastname: Sasongko
authors.affiliation: a Department of Ophthalmology , Faculty of Medicine, Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Angela N
authors.initials: AN
authors.lastname: Agni
authors.affiliation: a Department of Ophthalmology , Faculty of Medicine, Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Firman S
authors.initials: FS
authors.lastname: Wardhana
authors.affiliation: b Helen Keller International , Jakarta , Indonesia.
authors.forename: Satya P
authors.initials: SP
authors.lastname: Kotha
authors.affiliation: b Helen Keller International , Jakarta , Indonesia.
authors.forename: Prateek
authors.initials: P
authors.lastname: Gupta
authors.affiliation: a Department of Ophthalmology , Faculty of Medicine, Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Tri W
authors.initials: TW
authors.lastname: Widayanti
authors.affiliation: a Department of Ophthalmology , Faculty of Medicine, Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.lastname: Supanji
authors.affiliation: c Faculty of Medicine , Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Felicia
authors.initials: F
authors.lastname: Widyaputri
authors.affiliation: c Faculty of Medicine , Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Rifa
authors.initials: R
authors.lastname: Widyaningrum
authors.affiliation: d Singapore National Eye Centre , National University of Singapore , Singapore.
authors.forename: Tien Y
authors.initials: TY
authors.lastname: Wong
authors.affiliation: e Department of Public Health, Faculty of Medicine , Yamagata University , Yamagata , Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Kawasaki
authors.affiliation: f Centre for Vision Research , Westmead Millennium Institute, University of Sydney , Sydney , NSW , Australia.
authors.forename: Jie Jin
authors.initials: JJ
authors.lastname: Wang
authors.affiliation: a Department of Ophthalmology , Faculty of Medicine, Universitas Gadjah Mada , Yogyakarta , Indonesia.
authors.forename: Suhardjo
authors.initials: S
authors.lastname: Pawiroranu
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D001766:Blindness / Q000453:epidemiology / Q000209:etiology; D016000:Cluster Analysis; D003430:Cross-Sectional Studies; D003924:Diabetes Mellitus, Type 2 / Q000150:complications*; D003930:Diabetic Retinopathy / Q000150:complications / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007214:Indonesia / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors
keywords: Community-based study; diabetic retinopathy; methodology; type 2 diabetes