Table 2.
Pearson’s correlation coefficients between different variables in the control population.
| Variable | Age (Years) | BMI | Serotonin (µmol/L) | Ghrelin (pmol/L) |
GABA (µmol/L) |
Dopamine (pmol/L) |
Melatonin (pmol/L) |
Adrenaline (pmol/L) |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| r | p | r | p | r | p | r | p | r | p | r | p | r | p | r | p | |
| Age (years) | 1 | -- | 0.219 | 0.415 | −0.450 | 0.08 | 0.377 | 0.15 | 0.108 | 0.692 | −0.394 | 0.131 | 0.583 * | 0.018 | −0.403 | 0.121 |
| BMI | 0.219 | 0.415 | 1 | -- | −0.270 | 0.311 | 0.259 | 0.333 | 0.019 | 0.943 | 0.223 | 0.407 | 0.455 | 0.077 | −0.087 | 0.749 |
| Serotonin (µmol/L) | −0.450 | 0.080 | −0.270 | 0.311 | 1 | -- | −0.219 | 0.416 | 0.230 | 0.392 | 0.420 | 0.106 | −0.242 | 0.366 | 0.298 | 0.262 |
| Ghrelin (pmol/L) |
0.377 | 0.150 | 0.259 | 0.333 | −0.219 | 0.416 | 1 | -- | −0.089 | 0.743 | −0.375 | 0.153 | 0.434 | 0.093 | −0.115 | 0.671 |
| GABA (µmol/L) |
0.108 | 0.692 | 0.019 | 0.943 | 0.230 | 0.392 | −0.089 | 0.743 | 1 | -- | −0.008 | 0.976 | 0.061 | 0.821 | −0.183 | 0.497 |
| Dopamine (pmol/L) |
−0.394 | 0.131 | 0.223 | 0.407 | 0.420 | 0.106 | −0.375 | 0.153 | −0.008 | 0.976 | 1 | -- | −0.255 | 0.340 | 0.304 | 0.252 |
| Melatonin (pmol/L) |
0.583 * | 0.018 | 0.455 | 0.077 | −0.242 | 0.366 | 0.434 | 0.093 | 0.061 | 0.821 | −0.255 | 0.340 | 1 | -- | −0.435 | 0.092 |
| Adrenaline (pmol/L) |
−0.403 | 0.121 | −0.087 | 0.749 | 0.298 | 0.262 | −0.115 | 0.671 | −0.183 | 0.497 | 0.304 | 0.252 | −0.435 | 0.092 | 1 | -- |
* Correlation is significant at p < 0.05 (2-tailed).