Table 1.

Definition of T2D outcomes across the three studies in the Diabetes LEAD Network

VA EHR (NYU)	Incident T2D: meets at least one of the following criteria during the study period:
	1. At least two separate inpatient or outpatient encounters with T2D ICD-9/10 code
	2. Any Rx of T2D medication (excluding metformin or acarbose alone)
	3. At least one encounter with a T2D ICD-9/10 code and two elevated (≥6.5%) glycosylated hemoglobin levels according to laboratory test results
	4. One encounter with T2D ICD-9/10 code and two or more HbA1c ≥6.5% (on different days)
REGARDS (UAB)	Prevalent T2D: meets at least one of the following criteria at baseline:
	1. Fasting glucose level ≥126 mg/dL
	2. Random glucose level ≥200 mg/dL
	3. Use of oral or injectable T2D medications or insulin
	Incident T2D: meets at least one of the following criteria at second visit, among participants without prevalent T2D at baseline:
	1. Fasting glucose level ≥126 mg/dL
	2. Random glucose level ≥200 mg/dL
	3. Use of oral or injectable T2D medications or insulin
G/JHU EHR (G-JHU)	New-onset T2D: meets criterion 1 and at least one other criterion during the study period:
	1. At least 2 years of contact with the health system prior to the first T2D criterion being met
	2. At least two separate encounter dates with T2D ICD-9/10 code or Geisinger specific electronic diagnosis grouper codes
	3. At least one T2D medication order after age 10 years, other than metformin or acarbose, if female
	4. At least one encounter with T2D ICD-9/10 code and an abnormal laboratory result

ICD, International Classification of Diseases; Rx, medication prescription; VA, Veterans Affairs.