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Table 3 Pearson correlations between methods for different sleep metrics

From: An automatic estimation of the rest-interval for MotionWatch8© using uniaxial movement and lux data

Sleep Metric Methods LM CSD Protocol BM
Fragmentation index CSD 0.91    
Protocol 0.92 0.98   
BM 0.95 0.84 0.86  
BL 0.99 0.91 0.91 0.94
Sleep efficiency CSD 0.88    
Protocol 0.87 0.97   
BM 0.96 0.88 0.89  
BL 0.97 0.83 0.84 0.91
Sleep duration CSD 0.91    
Protocol 0.92 0.98   
BM 0.95 0.84 0.86  
BL 0.99 0.90 0.91 0.94
Sleep latency CSD 0.20*    
Protocol 0.18* 0.79   
BM 0.23* 0.12** 0.09**  
BL 0.72 0.25* 0.35 0.23**
  1. LM Light-motion algorithm, CSD Consensus sleep diary, BM Biased-motion algorithm, BL Biased-light algorithm
  2. *p < 0.05; **p > 0.05