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. Author manuscript; available in PMC: 2018 May 1.
Published in final edited form as: Appetite. 2017 Jan 7;112:1–8. doi: 10.1016/j.appet.2017.01.005

Table 4.

Comparison of Impulsivity Assessments Between Healthy Controls (HC), Patients with Bulimia Nervosa (BN Only), and Patients with Bulimia Nervosa and a Current or Past Alcohol Use Disorder (BN Current/Past AUD)

BN Current/Past
BN Only (n=18) AUD (n=13) HC (n=12)*
M SD M SD M SD F df p Eta2
GoStop Impulsivity Paradigm, GoStop Ratio 0.35 ± 0.28 0.48 ± 0.33 0.32 ± 0.21 1.2 2, 42 0.31 0.06
IMT/DMT, IMT Ratio* 0.36 ± 0.16 0.43 ± 0.16 0.27 ± 0.15 3.1 2, 41 0.06 0.14
IMT/DMT, DMT Ratio 0.36 ± 0.22 0.46 ± 0.20 0.31 ± 0.18 2.0 2, 42 0.15 0.09
BIS-11, Attentional Impulsiveness 17.0 ± 4.7¥ 18.2 ± 4.1¥ 13.3 ± 3.3¥ 4.8 2, 42 0.01 0.20
BIS-11, Motor Impulsiveness 20.8 ± 4.9 24.1 ± 4.1 20.1 ± 3.0 3.3 2, 42 0.05 0.02
BIS-11, Nonplanning Impulsiveness 25.3 ± 5.1¥ 28.2 ± 4.7¥ 18.1 ± 3.3¥ 16.5 2, 42 <0.001 0.38
BIS-11, Total Score 63.1 ± 13.0¥ 70.5 ± 9.1¥ 51.4 ± 7.7¥ 10.2 2, 42 <0.001 0.26
Stroop Color-Word Interference 7.0 ± 8.1 8.1 ± 9.0 7.0 ± 9.6 .068 2, 42 0.93 0.03
Delay Discounting Task, mean k 0.006 ± 0.009 0.018 ± 0.021 0.008 ± 0.008 3.2 2, 42 0.05 0.14

Notes: BN=bulimia nervosa

*

One outlier removed for IMT, value > 7 SD beyond group mean; IMT/DMT=Immediate and Delayed Memory Task; BIS-11=Barratt Impulsiveness Scale

¥

Both BN Groups (BN Only & BN Current/Past AUD) > HC (all p’s ≤ 0.05)