Table 1

Baseline characteristics at DPP randomization

OverallPlaceboMetforminLifestyle
Men873 (31.6)289 (31.0)305 (33.5)279 (30.3)
Women1,892 (68.4)643 (69.0)606 (66.5)643 (69.7)
Race/ethnicity
 Caucasian1,621 (58.6)534 (57.3)548 (60.2)539 (58.5)
 African American
 Hispanic422 (15.3)135 (14.5)147 (16.1)140 (15.2)
 American Indian150 (5.4)53 (5.7)47 (5.2)50 (5.4)
 Asian American125 (4.5)53 (5.7)30 (3.3)42 (4.6)
HbA1c
 <5.5%532 (19.2)186 (20.0)164 (18.0)182 (19.7)
 5.5–5.9%1,200 (43.4)385 (41.3)421 (46.2)394 (42.7)
 6.0–6.4%1,033 (37.4)361 (38.7)326 (35.8)346 (37.5)
Age (years)50.3 (10.6)50.2 (11.3)50.4 (10.2)50.1 (10.4)
Weight (kg)93.3 (19.8)93.1 (20.3)93.4 (19.4)93.3 (19.6)
BMI (kg/m2)33.7 (6.5)33.6 (6.6)33.6 (6.4)33.8 (6.5)
Waist circumference (cm)104.3 (14.1)104.5 (14.5)104.1 (13.9)104.4 (13.8)
FPG (mg/dL)105.4 (7.4)105.3 (7.3)105.2 (7.4)105.6 (7.4)
2hPG (mg/dL)163.9 (16.9)163.5 (16.7)164.3 (17.0)163.8 (16.9)
HbA1c (%)5.8 (0.4)5.8 (0.4)5.8 (0.4)5.8 (0.4)
  • Data are n (%) or mean (SD). None of the variables differed significantly among treatment groups.