PMID- 27271351 OWN - NLM STAT- MEDLINE DCOM- 20170515 LR - 20221207 IS - 2005-6648 (Electronic) IS - 1226-3303 (Print) IS - 1226-3303 (Linking) VI - 31 IP - 4 DP - 2016 Jul TI - Poor glycemic control is associated with the risk of subclinical hypothyroidism in patients with type 2 diabetes mellitus. PG - 703-11 LID - 10.3904/kjim.2015.198 [doi] AB - BACKGROUND/AIMS: Overt hypothyroidism is frequently found in patients with type 2 diabetes mellitus (T2DM), but it remains unknown the relationship between subclinical hypothyroidism (SCH) and T2DM. We attempt to evaluate the difference in prevalence of SCH between patients with T2DM and general population, and the association between SCH and glycemic control status ofdiabetic patients. METHODS: This was cross-sectional study. Total 8,528 subjects who visited for health check-up were recruited. SCH was defined as an elevated level of serum thyroid stimulating hormone (> 4.0 mIU/L) with a normal level of free thyroxine. T2DM group was categorized into three groups by glycosylated hemoglobin (HbA1c): < 7% (reference), >/= 7% and < 9%, >/= 9%. RESULTS: Finally, 7,966 subjects were included. The prevalence of SCH was not different between healthy controls and subjects with T2DM (8.1% vs. 7.4%, p = 0.533; in men, 5.7% vs. 5.1%, p = 0.573; in women, 10.9% vs. 11.7%, p = 0.712), but it was increased with highest HbA1c group more than well controlled group, especially in women. The risk of SCH was increased by group with poorer glycemic control; the odds ratio for HbA1c >/= 9% compared to < 7% was 2.52 (95% confidence interval [CI], 1.09 to 5.86; p = 0.031), and 4.58 (95% CI, 1.41 to 14.87; p = 0.011) in women, but not significant in men. CONCLUSIONS: The prevalence of SCH was similar between T2DM and healthy group. Poor glycemic control in T2DM was obviously associated with the risk of SCH, especially in elderly women. These results suggest SCH as comorbidity may be considered in elderly women with poor glycemic control. FAU - Cho, Jae Ho AU - Cho JH AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Kim, Ho Jin AU - Kim HJ AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Lee, Jun Ho AU - Lee JH AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Park, Il Rae AU - Park IR AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Moon, Jun Sung AU - Moon JS AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Yoon, Ji Sung AU - Yoon JS AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Lee, In-Kyu AU - Lee IK AD - Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea. FAU - Won, Kyu Chang AU - Won KC AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. FAU - Lee, Hyoung Woo AU - Lee HW AD - Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea. LA - eng PT - Journal Article DEP - 20160608 PL - Korea (South) TA - Korean J Intern Med JT - The Korean journal of internal medicine JID - 8712418 RN - 0 (Biomarkers) RN - 0 (Blood Glucose) RN - 0 (Glycated Hemoglobin A) RN - 0 (Hypoglycemic Agents) RN - 0 (hemoglobin A1c protein, human) RN - 9002-71-5 (Thyrotropin) RN - Q51BO43MG4 (Thyroxine) SB - IM MH - Adult MH - Age Distribution MH - Aged MH - Asymptomatic Diseases MH - Biomarkers/blood MH - Blood Glucose/*drug effects/metabolism MH - Chi-Square Distribution MH - Comorbidity MH - Cross-Sectional Studies MH - Diabetes Mellitus, Type 2/blood/diagnosis/*drug therapy/epidemiology MH - Female MH - Glycated Hemoglobin/*metabolism MH - Humans MH - Hypoglycemic Agents/*therapeutic use MH - Hypothyroidism/blood/diagnosis/*epidemiology MH - Logistic Models MH - Male MH - Middle Aged MH - Multivariate Analysis MH - Odds Ratio MH - Prevalence MH - Republic of Korea/epidemiology MH - Risk Factors MH - Sex Distribution MH - Thyrotropin/blood MH - Thyroxine/blood PMC - PMC4939501 OTO - NOTNLM OT - Diabetes mellitus, type 2 OT - Hemoglobin A, glycosylated OT - Subclinical hypothyroidism COIS- No potential conflict of interest relevant to this article was reported. EDAT- 2016/06/09 06:00 MHDA- 2017/05/16 06:00 PMCR- 2016/07/01 CRDT- 2016/06/09 06:00 PHST- 2015/06/30 00:00 [received] PHST- 2015/08/14 00:00 [revised] PHST- 2015/09/07 00:00 [accepted] PHST- 2016/06/09 06:00 [entrez] PHST- 2016/06/09 06:00 [pubmed] PHST- 2017/05/16 06:00 [medline] PHST- 2016/07/01 00:00 [pmc-release] AID - kjim.2015.198 [pii] AID - kjim-2015-198 [pii] AID - 10.3904/kjim.2015.198 [doi] PST - ppublish SO - Korean J Intern Med. 2016 Jul;31(4):703-11. doi: 10.3904/kjim.2015.198. Epub 2016 Jun 8.