[The prevalence of type I diabetes mellitus among adult population of towns and regions of Lithuania].
OBJECTIVE, MATERIAL AND METHODS: The goal of study was to analyze the prevalence rates in > 15-year-aged patients with Type 1 (insulin-dependent) diabetes mellitus in different provinces, cites, and regions of Lithuania. The data on > 16-year-aged patients were collected with the help of endocrinologists and physicians-internists working in the diabetes care in all towns and regions in Lithuania. The data on > 14 and < 16-year-aged patients we have received from the National children Insulin-dependent diabetes mellitus Register.


RESULTS
On 31 December 1998 there were 1, 744 > or = 15-year-aged and adult Type 1 diabetic patients or 140.97 per 100,000 (95% uneven Poisson confidence interval was 134.97-143.43) living in 12 cities of national jurisdiction and 1,609 or 112.22 (107.10-117.57) living in 44 country-side regions, p > 0.05. Male/female ratio of prevalence rates in cities was 1.48, and in country-side regions--1.44. The prevalence rates of Type 1 diabetes mellitus in cities with > or = 100,000 inhabitants vary from 123.70 (107.73-142.04) in Klaipeda city to 173.34 (159.85-187.97) (p > 0.05) in Kaunas city. The prevalence rate of Type 1 diabetes mellitus in localities with < 70,000 inhabitants vary from 61.31 (37.56-100.08) in Lazdijai region to 184.25 (130.30-260.55) in Druskininkai health-resort or 228.53 (109.09-480.00) in Birstonas health-resort. The prevalence rate of Type 1 diabetes mellitus was 118.47 (102.73-136.62) in Alytus province, 152.95 (143.39-163.215) in Kaunas province, 121.04 (109.66-133.60) in Klaipeda province, 115.07 (96.00-137.93) in Marijampole province, 125.30 (112.28-139.83) in Panevezys province, 114.46 (105.10-129.04) in Siauliai province, 115.12 (95.89-138.21) in Taurage province, 137.01 (118.85-157.95) in Telsiai province, 98.23 (84.05-114.81) in Utena province and 117.75 (110.10-125.93) in Vilnius province. The male/female ratios of rates were 1.71, 1.35, 1.39, 1.14, 1.87, 1.67, 1.72, 1.12, 1.31 and 1.51.


CONCLUSIONS
There were no statistical significant differences between Type 1 diabetes mellitus prevalence rates in different localities in Lithuania.
Ostrauskas
Rytas
R
Kauno medicinos universiteto Endokrinologijos institutas, Eiveniu 2, 3007 Kaunas. Rytas.O@takas.lt
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D016009:Chi-Square Distribution; D003430:Cross-Sectional Studies; D003627:Data Interpretation, Statistical; D003922:Diabetes Mellitus, Type 1 / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008097:Lithuania / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D012737:Sex Factors