Comparison of metabolite ratios between obstructive sleep apnoea (OSA) subgroup (patients without cardiac disease or cardiovascular risk factors) and controls
| OSA subgroup | Controls | p-value | |
| Subjects n | 14 | 10 | |
| PWM | |||
| mI/Cr | 0.7±0.08 | 0.69±0.05 | 0.56 |
| NAA/Cho | 1.75±0.30 | 1.62±0.28 | 0.36 |
| NAA/Cr | 1.84±0.19 | 1.74±0.16 | 0.27 |
| Cho/Cr | 1.07±0.2 | 1.09±0.12 | 0.77 |
| FWM | |||
| mI/Cr | 0.65±0.1 | 0.73±0.15 | 0.15 |
| NAA/Cho | 1.66±0.31 | 1.49±0.25 | 0.22 |
| NAA/Cr | 1.61±0.13 | 1.74±0.15 | 0.03 |
| Cho/Cr | 1.0±0.17 | 1.19±0.17 | 0.01 |
| PFC | |||
| mI/Cr | 0.63±0.08 | 0.62±0.09 | 0.49 |
| NAA/Cho | 2.19±0.40 | 2.07±0.36 | 0.44 |
| NAA/Cr | 1.56±0.11 | 1.58±0.15 | 0.64 |
| Cho/Cr | 0.74±0.13 | 0.78±0.13 | 0.5 |
Data are presented as mean±sd. PWM: parieto-occipital white matter; FWM: frontal white matter; PFC: prefrontal cortex; mI: myo-inositol; NAA: N-acetylaspartate; Cr: creatine; Cho: choline.