title: The prevalence of type 1 diabetes mellitus among 15-34-year-aged Lithuanian inhabitants during 1991-2010.
abstract: OBJECTIVE
  To summarize the data on the prevalence of type 1 diabetes mellitus among 15-34-year-aged Lithuania inhabitants (1991-2010).
  
  
  METHODS
  New prevalent cases consist of growing-up patients with diabetes onset in childhood, i.e., up to 14 years, new onset 15-34-year-aged type 1 diabetic patients Lithuanian inhabitants, and immigrants. The data on type 1 diabetes was collected with the help of general practitioners and regional endocrinologists in Lithuania.
  
  
  RESULTS
  On 31 December 1991, there were 1202 adolescent and adult 15-34-year-aged patients with type 1 diabetes mellitus or 103.59 per 100,000 inhabitants of the same age group (95% Poisson CI 97.90-109.62), and at the end of 2010 - 1533 or 187.80 (178.63-197.44), respectively in Lithuania. During 19-year period the mean increase of type 1 diabetic patients was 1.25±1.94% per year or 1.47±2.74 per 100,000 inhabitants per mean year of the study period (for males 1.42±2.14% or 1.69±3.05/100,000 and for females 1.05±1.99%, or 1.24±2.92/100,000). Regression-based linear trends showed that the prevalence of type 1 diabetes mellitus in 15-34-year-age group had a tendency to increase among males (r=0.953; p<0.001) and females (r=0.970; p<0.001). The age adjusted prevalence frequencies for males and females in 1991 were correspondingly 102.81/100,000 and 104.55/100,000, and in 2010 - 193.75 and 182.01.
  
  
  CONCLUSIONS
  The prevalence of type 1 diabetes mellitus among 15-34-year-age males and females had a tendency to increase during 1991-2010.
authors.affiliation: Institute of Endocrinology, Lithuanian University of Health Sciences, Kaunas, Lithuania. Electronic address: rytas.ostrauskas@med.kmu.lt.
authors.forename: Rytas
authors.initials: R
authors.lastname: Ostrauskas
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D016014:Linear Models; D008097:Lithuania / Q000453:epidemiology; D008297:Male; D015995:Prevalence; D012042:Registries; D017678:Sex Distribution; D012737:Sex Factors; D013997:Time Factors; D055815:Young Adult
keywords: 15–34-Year-age; Database; Prevalence; Type 1 diabetes mellitus