Objectives: To describe the characteristics, vascular risk, complications, and quality of care among people with type 1 diabetes (T1D) in mainland France, as well as changes over time, based on two different samples selected in 2001 and 2007. Methods: A total of 234 and 275 adults with T1D participated in Entred 2001 and Entred 2007, respectively, in mainland France. Data on medical reimbursement claims and questionnaires mailed to patients and their physicians were collected. Results: In 2007, the mean age of adults with T1D was 42 years. Obesity had increased (14%; +4 percentage points since 2001), and smoking was reported by 39% of participants. The mean HbA1c level was 7.9% (+0.2%) and blood pressure was 125/77 mmHg (-3/-1 mmHg). Angina or myocardial infarction was reported by 7% (stable), laser eye treatment by 24% (-1 percentage point), and an active or healed plantar ulcer by 12% (+6 percentage points) of participants. In total, 28% were being treated by a specialist (+7 percentage points); 35% (+8 percentage points) had undergone 3 HbA1c tests, 61% (+3 percentage points) a creatinine test, 42% (+7 percentage points) a proteinuria or albuminuria test, and 54% (+6 percentage points) a private ophthalmology consultation within the year. Discussion: In 2007, vascular risk remained high among people with T1D, particularly due to frequent smoking, rising obesity, and inadequate glycemic control. The frequency of complications had not decreased. As for the screening for complications, it had improved significantly over six years, although progress still needs to be made in this area. (R.A.)