In an observational study, glycosylated hemoglobin between 8% and 9% was best.

Experienced clinicians have long recognized that tight glycemic control can be perilous in frail older patients with type 2 diabetes. Now, an observational study addresses that concern. Researchers in San Francisco studied 367 community-dwelling, older patients (mean age, 80) with diabetes who participated in a comprehensive adult day-care program and were unable to live independently.