title: Linking glycemic control and executive function in rural older adults with diabetes mellitus.
abstract: OBJECTIVE
  To examine the association between glycemic control and the executive functioning domain of cognition and to identify risk factors for inadequate glycemic control that may explain this relationship.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  In-person interviews conducted in participants' homes.
  
  
  METHODS
  Ninety-five rural older African Americans, American Indians, and whites with diabetes mellitus (DM) from three counties in south-central North Carolina.
  
  
  METHODS
  Participants underwent uniform evaluations. Glycemic control was measured using a validated method, and executive function was assessed using a previously established set of measures and scoring procedure. Information pertaining to medication for treatment of DM, knowledge of DM, and DM self-care behaviors were obtained.
  
  
  RESULTS
  In linear regression models adjusting for sex, age, education, ethnicity, duration of DM, and depressive symptoms, executive function was significantly associated with glycemic control. A 1-point higher executive function score was associated with a 0.47 lower glycosylated hemoglobin value (P=.01). The association between glycemic control and executive function became nonsignificant (P=.08) when controlling for several glycemic control risk factors, including use of DM medication and DM knowledge.
  
  
  CONCLUSIONS
  These results suggest that poor glycemic control is associated with impairments in performance on composite measures of executive function and that modifiable risk factors for glycemic control such as use of DM medication and DM knowledge may explain this relationship.
authors: Department of Family and Community Medicine, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA. hnguyen@wfubmc.edu
authors: Ha T
authors: HT
authors: Nguyen
authors: Joseph G
authors: JG
authors: Grzywacz
authors: Thomas A
authors: TA
authors: Arcury
authors: Christine
authors: C
authors: Chapman
authors: Julienne K
authors: JK
authors: Kirk
authors: Edward H
authors: EH
authors: Ip
authors: Ronny A
authors: RA
authors: Bell
authors: Sara A
authors: SA
authors: Quandt
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001786:Blood Glucose / Q000032:analysis*; D003430:Cross-Sectional Studies; D003920:Diabetes Mellitus / Q000517:prevention & control* / Q000523:psychology*; D056344:Executive Function; D005260:Female; D015577:Geriatric Assessment; D006442:Glycated Hemoglobin / Q000032:analysis; D006801:Humans; D007407:Interviews as Topic; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009657:North Carolina; D012307:Risk Factors
chemical_list: D001786:Blood Glucose; D006442:Glycated Hemoglobin