Table 3. Results of heat-pain threshold: effects of group, genotype and menstrual cycle phase.
| PDM | Control | p Value | |||||
|---|---|---|---|---|---|---|---|
| AA | G carrier | AA | G carrier | Phase | Group | Genotype | |
| C7-dermatome | |||||||
| Menstruation | 43.7 (3.65) | 44.4 (3.07) | 46.0 (2.74) | 45.0 (3.69) | 0.231 | 0.024 | 0.938 |
| Peri-ovulatory phase | 43.3 (3.04) | 44.3 (2.95) | 46.3 (2.20) | 44.6 (3.59) | 0.019 | 0.865 | |
| T11-dermatome | |||||||
| Menstruation | 42.8 (3.12) | 43.4 (2.75) | 44.7 (2.96) | 43.8 (3.49) | 0.599 | 0.130 | 0.831 |
| Peri-ovulatory phase | 42.8 (2.99) | 43.6 (2.69) | 45.1 (2.83) | 43.8 (3.66) | 0.094 | 0.883 | |
Subjects who did not complete the thermal quantitative sensory test were excluded from respective calculations: 1 PDM subject with G allele during menstruation, 2 PDM subjects with AA homozygotes during the peri-ovulatory phase, 1 control with G allele during menstruation, and 3 controls with AA homozygotes during menstruation.
The data are presented as the means (SD). PDM, primary dysmenorrhea.