Table 1 Clinical characteristics of patient group based on their OPRM-1 A118G genotype
Variable | A/A carriers | A/G, G/G carriers |
|---|---|---|
No. of patients | 119 | 34 |
Age in years, mean (±SD) | 43 (±14) | 44 (±14) |
Head pain score, median (range) | 7 (1–10) | 8 (3–10) |
High head pain (%) | 37 | 64.7 |