CHIA-HSUIN CHANGShau W.Y.YI-DER JIANGHUNG-YUAN LITIEN-JYUN CHANGH.-H. Sheu W.Kwok C.F.Ho L.T.LEE-MING CHUANG2020-10-152020-10-1520100742-3071https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952720287&doi=10.1111%2fj.1464-5491.2010.03007.x&partnerID=40&md5=9767f9db04b7e4d78967be6066bdc263https://scholars.lib.ntu.edu.tw/handle/123456789/517187Aim To evaluate annual prevalence and incidence of Type 2 diabetes and to examine possible trends among adults in Taiwan. Methods A retrospective nationwide longitudinal study using the Taiwan National Health Insurance Research Database collected during 1999-2004. Adult patients aged ? 20 years old with prevalent and incident Type 2 diabetes were identified using ICD-9-CM diagnostic codes. Age-specific and age-direct-standardized annual incidence and prevalence were calculated to describe their trends in different gender and age group and compared using Poisson regression. Results During the study years, the age-standardized prevalence of Type 2 diabetes increased from 4.7 to 6.5% for men and from 5.3 to 6.6% for women. The increasing trends in prevalence were significant and higher among people aged < 40 and ? 80 years. The age-standardized incidence rates of Type 2 diabetes per 1000 person-years were approximately 7.6 and remain stable for men, but decreasing from 7.7 to 6.9 for women. However, the incidence increased significantly in younger adults aged < 40 years whose relative incidence (RI with 95% confidence interval) was 1.31 (1.20-1.42) for men and 1.04 (1.01-1.08) for women. The incidence trends for people aged ? 40 years were decreased for men and women. The differences in incidence trends between age groups and between genders were all statistically significant (all P < 0.001). Conclusions This study demonstrated a substantial increasing trend in Type 2 diabetes prevalence during 1999-2004 among adults in Taiwan. Despite the incidence decreased in older people, young men aged 20-40 years were most susceptible to higher incidence of Type 2 diabetes. ? 2010 Diabetes UK.[SDGs]SDG3glucose; oral antidiabetic agent; adult; age; aged; article; controlled study; diet restriction; disease predisposition; female; glucose blood level; human; incidence; international classification of diseases; longitudinal study; major clinical study; male; non insulin dependent diabetes mellitus; prevalence; sex difference; Taiwan; Adult; Age Factors; Aged; Aged, 80 and over; Databases, Factual; Diabetes Mellitus, Type 2; Female; Humans; Incidence; Male; Middle Aged; National Health Programs; Prevalence; Retrospective Studies; Statistics as Topic; Taiwan; Young AdultType 2 diabetes prevalence and incidence among adults in Taiwan during 1999-2004: A national health insurance data set studyjournal article10.1111/j.1464-5491.2010.03007.x205462802-s2.0-77952720287