Table 3.

Effect of ST zolpidem on daytime PD assessments

Parameter	ST zolpidem dosage (mg)	Maximum change relative to placebo	p-value	Time of maximum change	Time no longer different from placebo
Word Recall (# words)	3.5	1.2	0.0387	20 min	1 h
	1.75	1.0	N.S.	1 h, 2 h	N.A.
	1.0	0.6	N.S.	1 h	N.A.
CRT (reaction time, ms)	3.5	234.7	<0.0001	20 min	2 h
	1.75	103.3	N.S.	1 h	N.A.
	1.0	85.7	N.S.	1 h	N.A.
CRT (# lapses)	3.5	13.6	<0.0001	20 min	2.5 h
	1.75	5.6	0.0199	20 min	1 h
	1.0	4.3	N.S.	1 h	N.A.
CRT (# errors)	3.5	5.1	0.0225	3 h	4 h
	1.75	3.1	N.S.	2.5 h	N.A.
	1.0	6.8	0.0419	1 h	1.5 h
SCT	3.5	14.8	<0.0001	20 min	2.0 h
	1.75	7.6	0.0011	1 h	1.5 h
	1.0	3.0	N.S.	1 h	N.A.