Table 1 Demographic characteristics of the HC, MS, and ML groups in experiment 1 (mean ± SD).

BAI, Beck Anxiety Inventory; BDI, Beck Depression Inventory; PSQI, Pittsburgh Sleep Quality Index; BIS, Barratt Impulsivity Scale; NA, not applicable.

HC
(n = 54)
MS
(n = 53)
ML
(n = 50)
Statistics
(F or t)
PEffect size
2p or Cohen’s d)
Post hoc test*
Age (years)36.02 ± 11.9337.34 ± 7.1736.40 ± 8.670.2740.7600.004NA
Education (years)9.80 ± 2.459.05 ± 3.668.68 ± 2.911.8290.1640.023NA
BAI26.19 ± 7.2529.06 ± 10.5426.94 ± 7.431.6100.2030.020NA
BDI7.81 ± 6.9916.34 ± 10.9214.00 ± 9.2212.329<0.0010.138MS > HC, ML > HC
PSQI4.15 ± 2.556.98 ± 3.976.76 ± 3.7910.884<0.0010.124MS > HC, ML > HC
BIS-1169.85 ± 19.2783.47 ± 19.2983.54 ± 18.229.197<0.0010.107MS > HC, ML > HC
Duration of current abstinence (months)NA3.00 ± 1.8616.30 ± 6.28−14.384<0.0012.872NA
Years of meth use before abstinenceNA8.41 ± 4.797.95 ± 4.520.4960.6210.099NA
Dosage of meth use before abstinence (g/month)NA13.40 ± 14.9619.46 ± 13.52−2.1550.0340.425NA

*The greater than symbol indicates direction of the significant results.