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. 2018 Nov 22;8(12):204. doi: 10.3390/brainsci8120204

Table 1.

Mean Values on Sleep Quality, Sleep Efficiency, N1, N2, Slow-Wave and, REM Sleep Time for Each Group Per Each Night of In-Laboratory Sleep.

V/C on Night 1 Mean (SD)-Adaptation Night C/V on Night 1 Mean (SD)-Adaptation Night V/C on Night 2 Mean (SD)-Verum Night C/V on Night 2 Mean (SD)-Control Night V/C on Night 3 Mean (SD)-Control Night C/V on Night 3 Mean (SD)-Verum Night
Subjective Sleep Quality 3.4 (0.53) 3.27 (1.05) 3.83 (0.53) 3.5 (0.95) 3.29 (0.38) 3.53 (0.98)
Sleep Efficiency (%) 81 (12) 82 (9) 89 (11) 84 (12) 89 (10) 92 (2)
N1 Sleep Time (min) 23.94 (11.50) 19.33 (6.94) 16.31 (8.24) 19.42 (8.77) 26.31 (14.44) 18.58 (9.44)
N2 Sleep Time (min) 219.81 (73.40) 279.00 (60.95) 241.13 (72.56) 242.17 (77.78) 254.13 (74.50) 274.75 (32.63)
SWS Sleep Time (min) 72.81 (38.57) 76.75 (13.22) 70.63 (30.80) 90.17 (35.45) 77.06 (29.27) 98.50 (8.29)
REM Sleep Time (min) 53.31 (19.71) 55.50 (20.39) 64.31 (34.48) 47.33 (23.46) 49.63 (22.66) 59.75 (23.60)
Total Sleep Time (min) 369.88 (89.65) 368.08 (59.56) 392.38 (92.12) 399.08 (108.94) 407.13 (81.78) 451.58 (45.10)

Values of sleep time for the stages are in minutes, sleep efficiency is scored as a percentage, and subjective sleep quality ranges from a minimum score of 1 to a maximum score of 5, with 5 being the best. SWS; slow-wave sleep; REM: rapid eye movement; V/C: Verum/Control; C/V: Control/ Verum.