. 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)	.000^b
Sleep-onset latency, mean (SD), min	47.50 (46.78) (n = 155)	24.94 (19.85) (n = 100)	.000^b
Sleep duration, mean (SD), h	5.37 (1.78) (n = 155)	6.15 (1.46) (n = 101)	.000^b
Time in bed, mean (SD), h	6.84 (2.21) (n = 156)	6.98 (1.22) (n = 101)	.487

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

P < .001.