Table 3 Primary outcome within and between different groups
| Â | Group A (electro-acupuncture) | Group B (sham acupuncture) | Group A vs Group B | |||
|---|---|---|---|---|---|---|
Mean Changes from Baseline (95% CI) | P Value | Mean Changes from Baseline (95% CI) | P Value | Differences (95% CI) | P Value | |
Waist Circumference (cm) | ||||||
 Before treatment  0 wk | NA | NA | NA | NA | -0.3 (-3.4 to 2.8) | 0.858 |
 During treatment  4 wk | -1.4 (-1.3 to 0.5) | 0.002 | -0.4 (-2.2 to -0.5) | 0.406 | -1.0 (-2.5 to 3.9) | 0.063 |
 After treatment  8 wk | -1.8 (-2.3 to -0.4) | 0.008 | -0.6 (-2.5 to -1.7) | 0.267 | -1.2 (-2.4 to 4.3) | 0.003 |
 Follow up  16 wk | -1.5 (-2.7 to -0.2) | 0.021 | -0.4 (-2.4 to -1.5) | 0.328 | -1.1 (-2.8 to 4.1) | 0.029 |