Table 2.

Multiple regression analyses showing the adverse effect of methamphetamine (MA) use disorders on objective episodic memory performance, daily memory symptoms, and metamemory.

Multiple Linear Regression	Adjusted R2	F	b	p-value
Learning Test Performance	0.18	11.7		<0.001
Age			−0.07	<0.001
Education			0.20	<0.001
Ethnicity			−0.67	0.003
Gender			0.66	0.007
LT MDD			0.21	0.38
LT Alcohol Use Dx			−0.33	0.20
LT Other Substance Use Dx			0.21	0.41
LT MA Use Dx			0.63	0.011
Recall Test Performance	0.18	11.5		<0.001
Age			−0.08	<0.001
Education			0.25	<0.001
Ethnicity			−0.37	0.003
Gender			−0.80	0.003
LT MDD			−0.14	0.26
LT Alcohol Use Dx			−0.21	0.12
LT Other Substance Use Dx			0.09	0.51
LT MA Use Dx			0.30	0.03
Daily Memory Symptoms	0.06	4.2		<0.001
Age			0.001	0.92
Education			−0.03	0.65
Ethnicity			0.43	0.13
Gender			0.39	0.19
LT MDD			−0.58	0.046
LT Alcohol Use Dx			0.43	0.17
LT Other Substance Use Dx			−0.53	0.09
LT Methamphetamine Use Dx			−1.1	<0.001
Logistic Regression	X2	p-value
Metamemory	88.4	<0.001
Age	12.7	0.005
Education	11.2	0.011
Ethnicity	6.25	0.10
Gender	9.07	0.03
LT MDD	9.59	0.02
LT Alcohol Use Dx	2.21	0.53
LT Other Substance Use Dx	6.65	0.08
LT MA Use Dx	8.03	0.045
LT MDD * LT MA Use Dx	11.9	0.008

Note. LT = Lifetime; MDD = Major Depressive Disorder; Dx = Disorder; MA = methamphetamine.