| Criterion | Method |
---|---|---|
Inclusion criteria | Age 21–65 years | Electronic data pull |
 | Body mass index ≥ 27 kg/m2 | Electronic data pull (≥ 26 kg/m2 to allow for error), screening telephone call, and confirmed at baseline visit |
Exclusion criteria | Diagnosis of diabetes mellitus | Electronic data pull, confirmed in telephone call |
 | Fasting plasma glucose ≤ 125 mg/dl on more than one occasion | Electronic data pull |
 | Hemoglobin A1c >7% | Electronic data pull |
 | Taking diabetes medication | Electronic data pull, confirmed in telephone call |
 | Intentional weight loss of at least 5 lbs in previous 3 months | Screening telephone call |
 | Enrolled in a research study or any program focused on lifestyle changes | Screening telephone call |
 | Unable to provide informed consent or answer survey questions unassisted | Screening telephone call |
 | Residing in nursing home or receiving home health care | Screening telephone call |
 | At least 1 error on a validated 6-item screen for cognitive impairment [7] | Screening telephone call |
 | Fasting plasma glucose ≤ 125 mg/dl at baseline | Baseline visit |