Table 3.
Distribution of subjects achieving different weight loss criteria by randomized group assignment. (SBWI: N=165; STEP: N=198)
| Group Based on Percent Weight Loss Using Measured Weight | ||||||||
|---|---|---|---|---|---|---|---|---|
| Assessment Period | Group | Missing Data | <5% | 5% to <7% | 7% to <10% | ≥10% | p-value* | |
| 3-months | SBWI | Number of Subjects (% of Subjects) | 14 (8.48%) | 47 (28.48%) | 27 (16.36%) | 33 (20.00%) | 44 (26.67%) | 0.22 |
| STEP | Number of Subjects (% of Subjects) | 14 (7.07%) | 79 (39.90%) | 27 (13.64%) | 38 (19.19%) | 40 (20.20%) | ||
| 6-months | SBWI | Number of Subjects (% of Subjects) | 26 (15.76%) | 29 (17.58%) | 16 (9.70%) | 20 (12.12%) | 74 (44.85%) | 0.12 |
| STEP | Number of Subjects (% of Subjects) | 24 (12.12%) | 51 (25.76%) | 25 (12.63%) | 30 (15.15%) | 68 (34.34%) | ||
| 9-months | SBWI | Number of Subjects (% of Subjects) | 39 (23.64%) | 41 (24.85%) | 7 (4.24%) | 10 (6.06%) | 68 (41.21%) | 0.31 |
| STEP | Number of Subjects (% of Subjects) | 43 (21.72%) | 48 (24.24%) | 13 (6.57%) | 23 (11.62%) | 71 (35.86%) | ||
| 12-months | SBWI | Number of Subjects (% of Subjects) | 36 (21.82%) | 39 (23.64%) | 10 (6.06%) | 13 (7.88%) | 67 (40.61%) | 0.29 |
| STEP | Number of Subjects (% of Subjects) | 52 (26.26%) | 42 (21.21%) | 20 (10.10%) | 20 (10.10%) | 64 (32.32%) | ||
| 15-months | SBWI | Number of Subjects (% of Subjects) | 42 (25.45%) | 46 (27.88%) | 7 (4.24%) | 15 (9.09%) | 55 (33.33%) | 0.86 |
| STEP | Number of Subjects (% of Subjects) | 58 (29.29%) | 54 (27.27%) | 8 (4.04%) | 21 (10.61%) | 57 (28.79%) | ||
| 18-months | SBWI | Number of Subjects (% of Subjects) | 44 (26.67%) | 46 (27.88%) | 12 (7.27%) | 8 (4.85%) | 55 (33.33%) | 0.11 |
| STEP | Number of Subjects (% of Subjects) | 59 (29.80%) | 50 (25.25%) | 13 (6.57%) | 24 (12.12%) | 52 (26.26%) | ||
| Group Based on Percent Weight Loss Using Imputed Weight for Missing Data | ||||||||
|---|---|---|---|---|---|---|---|---|
| Assessment Period | Group | Missing Data | <5% | 5% to <7% | 7% to <10% | ≥10% | p-value* | |
| 3-months | SBWI | Number of Subjects (% of Subjects) | ----- | 50 (30.30%) | 32 (19.39%) | 40 (24.24%) | 43 (26.06%) | 0.17 |
| STEP | Number of Subjects (% of Subjects) | ----- | 82 (41.41%) | 35 (17.68%) | 41 (20.71%) | 40 (20.20%) | ||
| 6-months | SBWI | Number of Subjects (% of Subjects) | ----- | 36 (21.82%) | 18 (10.91%) | 29 (17.58%) | 82 (49.70%) | 0.04 |
| STEP | Number of Subjects (% of Subjects) | ----- | 63 (31.82%) | 28 (14.14%) | 37 (18.69%) | 70 (35.35%) | ||
| 9-months | SBWI | Number of Subjects (% of Subjects) | ----- | 55 (33.33%) | 13 (7.88%) | 18 (10.91%) | 79 (47.88%) | 0.22 |
| STEP | Number of Subjects (% of Subjects) | ----- | 73 (36.87%) | 18 (9.09%) | 32 (16.16%) | 75 (37.88%) | ||
| 12-months | SBWI | Number of Subjects (% of Subjects) | ----- | 52 (31.52%) | 17 (10.30%) | 19 (11.52%) | 77 (46.67%) | 0.12 |
| STEP | Number of Subjects (% of Subjects) | ----- | 70 (35.35%) | 30 (15.15%) | 29 (14.65%) | 69 (34.85%) | ||
| 15-months | SBWI | Number of Subjects (% of Subjects) | ----- | 69 (41.82%) | 11 (6.67%) | 21 (12.73%) | 64 (38.79%) | 0.32 |
| STEP | Number of Subjects (% of Subjects) | ----- | 92 (46.46%) | 18 (9.09%) | 29 (14.65%) | 59 (29.80%) | ||
| 18-months | SBWI | Number of Subjects (% of Subjects) | ----- | 69 (41.82%) | 18 (10.91%) | 14 (8.48%) | 64 (38.79%) | 0.05 |
| STEP | Number of Subjects (% of Subjects) | ----- | 87 (43.94%) | 24 (12.12%) | 32 (16.16%) | 55 (27.78%) | ||
*
The p-value was obtained using the Chi-Square test