Correlation coefficient for associations between acupoints used for menstrual migraine
| Taichong (LR3) | Sanyinjiao (SP6) | Shuaigu (GB8) | Baihui (DU20) | Fengchi (GB20) | Taiyang (EX-HN5) | Hegu (LI4) | Zusanli (ST36) | |
| Taichong (LR3) | 1 | 0.66* | 0.03 | – | 0.40* | 0.17 | 0.56* | – |
| Sanyinjiao (SP6) | 0.66* | 1 | – | 0.03 | 0.48* | 0.03 | 0.40* | 0.21 |
| Shuaigu (GB8) | 0.03 | – | 1 | 0.20 | 0.20 | – | – | – |
| Baihui (DU20) | – | 0.03 | 0.20 | 1 | 0.06 | 0.53* | – | 0.12 |
| Fengchi (GB20) | 0.40* | 0.48* | 0.20 | 0.06 | 1 | 0.01 | – | – |
| Taiyang (EX-HN5) | 0.17 | 0.03 | – | 0.53* | 0.01 | 1 | 0.16 | 0.12 |
| Hegu (LI4) | 0.56* | 0.40* | – | – | – | 0.16 | 1 | 0.19 |
| Zusanli (ST36) | – | 0.21 | – | 0.12 | – | 0.12 | 0.19 | 1 |
*Correlation coefficient ≥0.40 indicates a moderate correlation between two different acupoints.