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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Psychosom Med. 2014 Sep;76(7):519–528. doi: 10.1097/PSY.0000000000000097

Table 2.

Descriptive Data for Sleep Behaviors and Fatigue (N = 130).

Variables Mean ± SD Range
Time of awakening (hrs) 7:00 a.m. ± 1.3 4:00 a.m. – 11:50 a.m.
Latency to fall asleep (min) 20.3 ± 23 1 – 150
Quality of sleep 5.7 ± 1.9 1 – 9
Morning restfulness 2.1 ± 0.9 0 – 4
Nap (% Yes) 42 %
Nap duration (min) 18.7 ± 20.9 0 – 110
Nocturnal awakenings (% Yes) 92 %
Nocturnal awakenings duration (min) 21.5 ± 28.2 0 – 180
MFSI total score 16.4 ± 11.8 −21 – 87
PSQI total score 8.1 ± 3.6 2 – 18

Note. Sleep diary variables were averaged across 2 assessment days. SD = standard deviation.

MFSI=Multidimensional Fatigue Symptom Inventory; PSQI= Pittsburgh Sleep Quality Index.