Table 2.
Number (%) of patients with 5% or more weight loss, mean weight change, mean weight (SD), and BMI (SD) by treatment condition.
| Outcome variable | Group 1 17-week program |
Group 2 17-week + maintenance |
P |
|---|---|---|---|
| Weight loss ≥5% | |||
| Week 17 | 89 (90) | 89 (89) | 1.00* |
| Week 69 | 44 (44) | 51 (52) | 0.40* |
| Week 121 | 34 (34) | 32 (33) | 0.77* |
| Weight change % (95% CI) | |||
| 0 to week 17 | −12.9 (−11.7 to −14.1) | −12.1 (−10.9 to −13.3) | |
| 0 to week 69 | −5.8 (−4.4 to −7.4) | −5.7 (−4.1 to −7.1) | 0.71** |
| 0 to week 121 | −3.5 (−1.8 to −5.2) | −2.9 (−1.3 to −4.6) | |
| Weight (SD) | |||
| Baseline | 120.6 (23.5) | 117.8 (22.0) | 0.53** |
| Week 17 | 105.0 (22.0) | 103.8 (22.3) | |
| Week 69 | 113.8 (25.9) | 111.3 (23.0) | |
| Week 121 | 116.6 (27.2) | 114.4 (23.1) | |
| BMI (SD, kg/m2) | |||
| Baseline | 42.1 (5.7) | 41.4 (6.4) | 0.43** |
| Week 17 | 36.7 (5.9) | 36.4 (6.7) | |
| Week 69 | 39.7 (6.9) | 39.0 (6.9) | |
| Week 121 | 40.7 (7.4) | 40.1 (6.9) |
∗By Fisher's exact test, ∗∗ P value for test of treatment effect (group × time interaction) in general linear modelling, repeated measure procedure.