Table 1.
Demographic, physical, and metabolic characteristics of study participants at baseline for all randomized participants and for participants who completed 24-month testing*
| Randomized |
Completed 24 months testing |
||||||
|---|---|---|---|---|---|---|---|
| Gastric band (N = 44) | Metformin (N = 44) | P value | Gastric band (N = 36) | Metformin (N = 34) | P value | Interaction P value† | |
| Demographics |
|||||||
| Female |
34 (77) |
35 (79) |
0.80 |
29 (81) |
27 (79) |
0.90 |
0.60 |
| Age (years) |
47 ± 10 |
51 ± 9 |
0.14 |
47 ± 10 |
52 ± 9 |
0.03 |
0.10 |
| Race/ethnicity |
0.68 |
0.98 |
0.96 |
||||
| White |
15 (34) |
10 (23) |
9 (25) |
9 (26) |
|||
| Black |
7 (16) |
9 (20) |
7 (20) |
7 (21) |
|||
| Hispanic |
19 (43) |
21 (48) |
17 (47) |
16 (47) |
|||
| Asian |
3 (7) |
4 (9) |
3 (8) |
2 (6) |
|||
| Anthropometrics |
|||||||
| Weight (kg) |
97.5 ± 12.2 |
96.1 ± 10.9 |
0.57 |
97.0 ± 12.2 |
95.9 ± 10.5 |
0.68 |
0.86 |
| BMI (kg/m2) |
35.7 ± 2.9 |
35 ± 2.9 |
0.24 |
35.7 ± 2.9 |
34.8 ± 2.8 |
0.24 |
0.89 |
| Glucose status |
|||||||
| IGT |
25 (57) |
26 (59) |
0.83 |
18 (50) |
20 (59) |
0.46 |
0.10 |
| Diabetes |
19 (43) |
18 (41) |
0.83 |
18 (50) |
14 (42) |
0.46 |
|
| Fasting glucose (mmol/L) |
6.2 ± 0.7 |
6.2 ± 0.8 |
0.88 |
6.2 ± 0.8 |
6.2 ± 0.9 |
0.69 |
0.57 |
| 2-h glucose (mmol/L) |
10.4 ± 2.7 |
10.5 ± 2.6 |
0.78 |
10.6 ± 2.7 |
10.5 ± 2.5 |
0.89 |
0.44 |
| HbA1c (mmol/mol) | 41.2 ± 4.6 | 40.1 ± 4.5 | 0.28 | 41.5 ± 4.5 | 40.8 ± 4.6 | 0.52 | 0.33 |
*Data are mean ± SD for continuous variables or n (%) for categorical variables.
†Interaction P value testing for differential effect of loss to follow-up between groups.