. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: J Affect Disord. 2009 Jul 24;122(3):198–207. doi: 10.1016/j.jad.2009.06.030

Table 2.

Sleep Architecture Characteristics for Entire Night

	Healthy (n=35)	Depressed/Anxious (n=20)	p-value
Mean total sleep time (in min)	346.74 (34.49)	333.58 (40.12)	0.205
Mean sleep onset latency (in min)	19.94 (22.91)	25.83 (22.40)	0.360
Sleep efficiency (%)	0.82 (0.07)	0.78 (0.08)	0.052^†
Number of arousals	47.34 (15.46)	45.26 (19.20)	0.667
Arousal Index	8.14 (2.94)	8.05 (3.22)	0.923
Stage 1 (in min)	9.46 (3.78)	11.62 (4.72)	0.069^†
Stage 2 (in min)	178.38 (39.80)	181.90 (30.37)	0.478
Stage 3 (in min)	74.60 (23.49)	69.69 (26.83)	0.482
Total NREM (in min)	262.44 (47.59)	263.20 (26.73)	0.313
Total REM (in min)	76.14 (24.17)	70.39 (26.40)	0.901
Average Latency to REM (in min)	89.57 (31.23)	86.98 (27.07)	0.757

Note:

^†

Trend towards significance