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Table 4 Sleep efficiency index from PSG and our methods

From: Sleep/wake estimation using only anterior tibialis electromyography data

Subject #
(symptom)
PSG S.E. (%) Estimated S.E. (%) Absolute difference Relative difference (%)
1 (N) 98.2 97.5 0.7 0.7
2 (N) 97.3 96.9 0.4 0.4
3 (N) 97.8 97.0 0.9 0.9
4 (N) 96.3 96.3 0.0 0.0
5 (N) 97.2 98.4 1.2 1.3
6 (N) 97.4 97.6 0.2 0.2
7 (N) 98.9 98.5 0.4 0.4
8 (O) 98.1 98.2 0.1 0.1
9 (O) 98.8 97.8 0.9 1.0
10 (P) 94.1 96.6 2.5 2.7
11 (P) 97.9 97.5 0.5 0.5
12 (P) 98.2 97.0 1.2 1.2
Mean(SD) 97.5 (1.3) 97.4 (0.7) 0.8 (0.7) 0.8 (0.7)
  1. S.E. sleep efficiency, SD standard deviation, symptom: N Normal, O OSA, P PLMD.