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Correlations matrix (r and P values) between pH and several sleep indices.
| Entire Recording | Day | Night | |
|---|---|---|---|
| TST | −0.60(0.004) | −0.55(0.01) | −0.53(0.01) |
| SE | −0.57(0.007) | −0.56(0.08) | −0.49(0.02) |
| NREM1 | 0.55(0.01) | 0.28(n.s.) | 0.56(0.008) |
| SWS | −0.47(0.03) | −0.58(0.006) | −0.4(n.s.) |
| Arousal index | 0.48(0.026) | 0.52(0.019) | 0.5 (0.02) |
TST, total sleep time; SE, sleep efficiency; SWS, slow wave sleep.
