Table 3.

Self-reported Sleep Quality

	All		Good Sleepers (PSQI ≤ 5)		Poor Sleepers (PSQI ≥ 6)
PSQI Element	M	SD	M	SD	M	SD
Sleep/Wake Times
Average^a bedtime (hours:min)	20:52	1:30	20:30	0:59	21:02	1:43
Average^a getting up time (hours:min)	05:53	0:53	05:57	0:44	05:51	0:57
Average^a Hours in Bed (hours:min)	6:57	1:40	7:30	0:55	6:44	1:50
Time to fall asleep (mins)	42.29	42.66	19.56	15.48	51.58	56.56
Hours slept per night (hours:min)	5:52	1:41	7:16	0:52	5:23	1:36
Trouble Sleeping^b
Not asleep within 30 mins	1.62	1.28	0.52	0.73	2.04	1.19
Wake up in night or early morning	2.20	1.90	1.41	1.17	2.51	0.89
Get up to use bathroom	2.08	1.09	1.57	1.19	2.25	1.01
Cannot breathe comfortably	0.82	1.11	0.25	0.71	1.02	1.18
Cough or snore loudly	0.74	1.16	0.32	0.85	0.87	1.21
Feel too cold	0.75	1.12	0.51	0.95	0.86	1.20
Feel too hot	1.58	1.28	1.28	1.29	1.69	1.25
Had bad dreams	1.30	1.13	0.68	0.86	1.56	1.11
Had pain	1.41	1.29	0.79	1.17	1.63	1.27
Other reason	1.69	1.56	1.03	1.50	1.98	1.53
Trouble staying awake	0.56	0.94	0.27	0.62	0.68	1.01
Enthusiasm to get things done	1.15	1.00	0.55	0.79	1.38	0.98
Sleep Component^c
Sleep quality	1.39	0.97	0.48	0.55	1.74	0.86
Latency	1.70	1.09	0.75	0.74	2.06	0.97
Duration	1.35	1.21	0.27	0.50	1.77	1.14
Efficiency	0.90	1.19	0.08	0.27	1.22	1.25
Disturbances	1.83	0.66	1.33	0.52	2.03	0.60
Medication	0.79	1.29	0.20	0.71	1.02	1.39
Day dysfunction	1.05	0.89	0.56	0.71	1.24	0.88

Note. N = 438. PSQI = Pittsburgh Sleep Quality Index.

Typical times.

Number of times during the past week troubled by these reasons (response options ranged from 0–4.

Sleep component scores ranged from 0–3.