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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Clin Pharmacol Ther. 2016 Sep 23;100(5):537–547. doi: 10.1002/cpt.428

Table 1.

Baseline characteristics of patients with Type II Diabetes

Clinical Site N (%)
Total patients 1056
Kaiser South East 154 (15%)
Marshfield Clinic 150 (14%)
Vanderbilt 251 (24%)
Kaiser Northern California 501 (47%)
Categorical Variable N (%)
Males 415 (61%)
Females 641 (39%)
European Americans1 376 (36%)
African Americans 665 (63%)
Asian Americans and Others 15 (1%)
Continuous Variable Median (range)
Age (years) 55 (23–90)
Body weight (kg) 96 (34–212)
Average Serum Creatinine (mg/dL) 0.91 (0.5–2.0)
Baseline HbA1c (%) 7.6 (5.6–17.9) (60 mmol/mol (38–172 mmol/mol)
Metformin daily dose (mg) 1000 (200–2500)
# HbA1c samples/patient 5 (1–45)
Years on study 1.43 (0.28–13.5)
1

Ethnicities reported are all self reported.

2

This is the average daily dose of metformin calculated from metformin start day up to the day, where minimum HbA1c levels were achieved between 3–18 months (and before other anti-diabetic drug or insulin was added). There was one patient, as noted in the electronic medical record, who had <250 mg average metformin dose due to an early stop of metformin (at 1000 mg) for several months and then restarted the metformin at 500 mg. As a result, the average metformin dose was <250mg.