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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Fam Community Health. 2014 Oct-Dec;37(4):288–297. doi: 10.1097/FCH.0000000000000040

Table 2.

Pittsburgh Sleep Quality Index

Day 2 Day 28 P
Sleep disturbance, n (%) 132 (90.4) 48 (50.5)
No sleep disturbance, n (%) 14 (9.6) (n = 146) 47 (49.5) (n = 95)a
Global PSQI score, mean (SD) 10.91 (4.14) (n = 146) 6.39 (3.64) (n = 95) .000b
Sleep-onset latency, mean (SD), min 47.50 (46.78) (n = 155) 24.94 (19.85) (n = 100) .000b
Sleep duration, mean (SD), h 5.37 (1.78) (n = 155) 6.15 (1.46) (n = 101) .000b
Time in bed, mean (SD), h 6.84 (2.21) (n = 156) 6.98 (1.22) (n = 101) .487
a

Sample size decreased over time since many patients were discharged sooner than day 28.

b

P < .001.