Table 2 Plasma levels of β-endorphin
N | β-endorphin fmol/L | p | |
|---|---|---|---|
pain patients | 80 | 26.2(3.59) | <0.05 |
controls | 56 | 28.2(4.63) | |
responder | 60 | 26.6(3.57) | <0.01 |
non-responder | 20 | 24.7(3.20) | |
Pain patients | |||
male OPRM1 AA | 31 | 26.8(3.25) | <0.05 |
male OPRM1 AG | 8 | 24.2(2.96) | |
female OPRM1 AA | 28 | 26.1(4.02) | ns |
female OPRM1 AG | 11 | 25.9(3.50) | |
Controls | |||
male OPRM1 AA | 19 | 25.8(2.17) | ns |
male OPRM1 AG | 6 | 31.5(9.13) | ns |
female OPRM1 AA | 23 | 29.3(4.60) | ns |
female OPRM1 AG | 8 | 28.2(1.63) | ns |