. Author manuscript; available in PMC: 2012 Feb 15.

Published in final edited form as: J Nurs Meas. 2011;19(2):105–114. doi: 10.1891/1061-3749.19.2.105

TABLE 3.

Coefficient of Variation (%)

Variable	Night 1	Night 2	Night 3	Night 4	Night 5	Night 6	Night 7
WASO	55.46	80.64	85.55	81.00	54.67	51.78	45.94
TST	33.99	29.54	32.51	26.83	22.86	24.59	29.84
Sleep latency	178.57	173.33	154.55	192.86	246.42	154.09	181.25
Sleep efficiency	17.38	19.03	21.29	15.86	15.40	11.99	22.23
Sleep disturbances	41.13	40.46	39.40	35.99	33.52	41.00	38.15

Note. WASO = wake after sleep onset. TST = total sleep time.