Table 2.
Comparisons results of retrospective and longitudinal sleep measures (sleep diaries).
| Retrospective Questionnaire |
STs = 29
Mean (sd) |
CNTs = 30
Mean (sd) |
Statistical Comparisons | adj-p |
| PSQI | 5.83(2.78) | 3.90 (1.52) | U = 633.500 | 0.032 |
| ESS | 7.21 (3.84) | 5.27(3.14) | t = −2.13 | 0.202 |
| Sleep Diaries Variables |
STs = 29
Mean (sd) |
CNTs = 30
Mean (sd) |
Statistical Comparisons | adj-p |
| SOL | 14.38 (10.14) | 13.07 (6.02) | U = 420.000 | 0.937 |
| ISW | 4.16 (0.59) | 5.67 (6.95) | U = 418.000 | 0.987 |
| TBT | 490.25 (53.31) | 498.04 (63.57) | t = −0.509 | 1.000 |
| TST | 438.00 (39.86) | 441.64 (41.33) | t = −0.344 | 1.000 |
| SE (%) | 89.86 (4.51) | 89.33 (5.11) | t = 0.420 | 1.000 |
| Sleep Depth | 3.78 (0.56) | 3.80 (0.49) | t = −0.102 | 0.919 |
| Sleep Quiet | 3.32 (0.64) | 3.75 (0.59) | t = −2.669 | 0.080 |
| Sleep Restless | 3.40 (0.65) | 3.56 (0.57) | t = −0.974 | 0.890 |
Significant results (p < 0.05) are highlighted in bold. Abbreviation: STs, Sleep Talkers’ group; CNTs, healthy subjects’ group; PSQI, Pittsburg Sleep Quality Index; ESS, Epworth Sleepiness Scale; SOL, Sleep Onset Latency; ISW, Intra-Sleep Wakefulness; TBT, Total Bed Time; TST, Total Sleep Time; SE, Sleep Efficiency.