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. Author manuscript; available in PMC: 2012 Aug 1.

Published in final edited form as: Drug Alcohol Depend. 2011 Feb 5;117(1):38–44. doi: 10.1016/j.drugalcdep.2011.01.003

Table 2.

Mean PSG Outcomes By Study Condition.

	Placebo		Extended-Release Zolpidem
	Cannabis Use	Cannabis Abstinence	Cannabis Use	Cannabis Abstinence

Total Sleep Time (min)	451 (10)	419 (9.6) ^*	464 (10)	419 (10) ^*
Sleep Efficiency	.89 (.01)	.85 (.01) ^*	.91 (.01)	.88 (.01) ^*
Sleep Latency (min)	8 (1)	29 (5) ^*	8 (1)	22 (3) ^*
REM Latency (min)	103 (8)	71 (5) ^*	90 (6)	83 (5)
Wake After Sleep Onset (min)	45 (6)	44 (6)	40 (6)	36 (5)
% Stage 1 Sleep	10 (1)	8 (1) ^*	9 (1)	8 (1)
% Stage 2 Sleep	50 (1)	46 (1) ^*^‡	49 (1)	51 (1)^‡
% Stage 3/4 Sleep	15 (1)	16 (1)	16 (1)	15 (1)
% REM Sleep	25 (1)	30 (1) ^*^‡	26 (1)	26 (1)^‡

^*

Denotes a significant abstinence effect

^‡

Denotes a significant difference between abstinence conditions