Table 3.

Prospective Memory performance in the MA User and Non-MA-using samples

MIST Variable	MA Users (n=39)	Non-MA Users (n=26)	p-value	Cohen’s d
Summary score	39.0 (30.0, 42.0)	42.0 (38.3, 48.0)	0.001	0.87
Time-based cues	6.0 (5.0, 7.0)	7.0 (6.0, 8.0)	0.003	0.76
Event-based cues	7.0 (6.0, 8.0)	7.0 (7.0, 8.0)	0.013	0.64
Total errors	4.0 (2.0, 5.0)	1.0 (0.0, 2.0)	<0.001	1.19
No Response	0.0 (0.0, 1.0)	0.0 (0.0, 1.0)	0.411	−0.12
Task Substitution	1.0 (0.0, 2.0)	0.0 (0.0, 1.0)	<0.001	0.91
Loss of Content	1.0 (0.0, 1.0)	0.0 (0.0, 1.0)	0.075	0.27
Loss of Time	0.0 (0.0, 1.0)	0.0 (0.0, 0.0)	<0.001	0.89
Recognition	8.0 (8.0, 8.0)	8.0 (8.0, 8.0)	0.740	0.05
Word Search	15.0 (13.0, 18.0)	17.0 (14.0, 19.3)	0.204	0.33
24-hour Delay (% Complete)	21%	35%	0.227	-----

Note. Data are presented as median values with the interquartile range in parenthesis unless otherwise indicated.

ProM = Prospective Memory. MA = methamphetamine. MIST = Memory for Intentions Screening Test.