Table 5.
Results of gamma regression model with GEE method on VAS.
| Predictor | Coefficient | SE | Mean ratio | 95% C.I. | P value |
|---|---|---|---|---|---|
| (Intercept) | 1.701 | 0.368 | 5.478 | 2.665–11.259 | <0.001∗ |
| Age | 0.001 | 0.002 | 1.001 | 0.997–1.005 | 0.637 |
| BMI | −0.001 | 0.012 | 0.999 | 0.977–1.022 | 0.920 |
| Gender | |||||
| Male | 0.008 | 0.096 | 1.008 | 0.835–1.215 | 0.936 |
| Female | 0.000 | 1.000 | |||
| Group | |||||
| Acupuncture | 0.156 | 0.098 | 1.169 | 0.964–1.417 | 0.113 |
| Control | 0.000 | 1.000 | |||
| Time | |||||
| 3 | −0.377 | 0.175 | 0.686 | 0.487–0.966 | 0.031∗ |
| 2 | −0.132 | 0.077 | 0.876 | 0.753–1.019 | 0.086 |
| 1 | 0.000 | 1.000 | |||
| Interaction | |||||
| Acupuncture Time 3 | 0.021 | 0.196 | 1.021 | 0.695–1.499 | 0.916 |
| Acupuncture Time 2 | −0.380 | 0.092 | 0.684 | 0.571–0.819 | <0.001∗ |
| Acupuncture Time 1 | 0.000 | 1.000 | |||
| Control Time 3 | 0.000 | 1.000 | |||
| Control Time 2 | 0.000 | 1.000 | |||
| Control Time 1 | 0.000 | 1.000 |
*Statistically significant difference (P < 0.05).