Table 2 Potential measures of rest-activity rhythms (further details are given in Appendix)
| Parametric (Cosinor) Model |
Non-parametric Model |
Sleep Quantity Analysis Model (Mean or Variability) | Sleep Analysis- Circadian Phase Model |
|---|---|---|---|
| Midline estimating statistic of rhythm (MESOR) | Inter-daily Stability (IS) | Mean Activity (MA) | Sleep Onset |
| Amplitude | Intra-daily Variability (IV) | Time in Bed (TIB) (± Lights Off) | Sleep Offset |
| Acrophase | Least active period: L5/ L5 Onset | Total Sleep Time (TST) | Sleep Midpoint |
| Most active period:M10/M10 Onset | Sleep Onset Latency (SOL) | Sleep Regularity Index (SRI) | |
| Amplitude | Sleep Efficiency (SE %) | ||
| Relative Amplitude | Fragmentation Index (FI %) | ||
| Wake after sleep onset (WASO) (± N awakenings > 5 min) |