Table 1.
Participant characteristics at baseline by randomization assignment
| Total, n = 2,155 | Placebo, n = 1,082 | Metformin, n = 1,073 | |
|---|---|---|---|
| Sex (n) | |||
| Men | 698 | 335 | 363 |
| Women | 1,457 | 747 | 710 |
| Race and ethnicity (n) | |||
| Non-Hispanic White | 1,188 | 586 | 602 |
| African American | 441 | 220 | 221 |
| Hispanic | 330 | 168 | 162 |
| American Indian | 111 | 59 | 52 |
| Asian American | 85 | 49 | 36 |
| Age (years) | 50.6 (10.4) | 50.3 (10.4) | 50.9 (10.3) |
| BMI (kg/m2) | 34.0 (6.6) | 34.1 (6.7) | 33.9 (6.6) |
| Fasting glucose (mg/dL) | 107 (8) | 107 (8) | 107 (8) |
| Fasting glucose (mmol/L) | 5.92 (0.47) | 5.92 (0.47) | 5.91 (0.47) |
| 2-h glucose (mg/dL) | 165 (17) | 164 (17) | 165 (17) |
| 2-h glucose (mmol/L) | 9.15 (0.95) | 9.13 (0.95) | 9.16 (0.96) |
| HbA1c (%) | 5.91 (0.50) | 5.91 (0.51) | 5.91 (0.50) |
| HbA1c (mmol/mol) | 41.1 (5.5) | 41.1 (5.5) | 41.1 (5.5) |
Data are means (SD) unless otherwise indicated.