Table 2 Internal consistency assessed by Cronbach’s alpha [95% confidence intervals] (A) and test-retest Pearson correlations (B) for the Swedish version of the Barratt Impulsiveness Scale (swe-BIS) administered to healthy controls, patients with amphetamine use disorder (AMPH), alcohol use disorder (AUD) and attention deficit hyperactive disorder (ADHD)

Full sample (n = 273)

Healthy controls (n = 113)

AMPH (n = 37)

AUD (n = 97)

ADHD (n = 26)

Swe-BIS all items

.89 [.87–.91]

.78 [.72–.89]

.87 [.82–.93]

.82 [.77–.87]

Swe-BIS attention

.79 [.76–.83]

.60 [.49–.71]

.70 [.56–.85]

.72 [.64–.80]

Swe-BIS motor

.72 [.67–.77]

.50 [.36–.64]

.68 [.53–.83]

.62 [.51–.73]

Swe-BIS non-planning

.77 [.72–.81]

.70 [.62–.79]

.71 [.58–.85]

.64 [.54–.75]

Swe-BIS total score (re-rest)

Swe-BIS attention (re-test)

Swe-BIS motor (re-test)

Swe-BIS non-planning (re-test)

Swe-BIS total score (test)

.78 P < 0.001

Swe-BIS attention (test)

.63 P < .001

.18 P = .16

.36 P = .005

Swe-BIS motor (test)

.39 P = .002

.54 P < .001

.26 P = .04

Swe-BIS non-planning (test)

.48 P < .001

.38 P = .003

.77 P < .001