Self-rated impulsivity in healthy individuals, substance use disorder and ADHD: psychometric properties of the Swedish Barratt impulsiveness scale

Table 3 Confirmatory Factor Analysis (CFA) results with model fit indices of five models of the Swedish version of the Barratt Impulsiveness Scale (swe-BIS)

Model	χ²	Df	RMSEA [90% CI]	SRMR	CFI	TLI	AIC
1-factor model	1166.436	405	0.083 [0.078–0.088]	0.084	0.691	0.668	19,102.624
2-factor model, 1st version^a	1137.630	404	0.082 [0.076–0.087]	0.083	0.702	0.679	19,071.382
2-factor model, 2nd version^b	1130.500	404	0.081 [0.076–0.086]	0.084	0.705	0.682	19,061.207
2-factor model, 3rd version^c	1152.555	404	0.082 [0.077–0.088]	0.084	0.696	0.673	19,087.222
3-factor model^d	1111.630	402	0.080 [0.075–0.086]	0.084	0.712	0.688	19,042.103

χ² chi square value, RMSEA Root mean squared error of approximation, SRMR Standardized root mean squared residual, CFI Comparative fit index, TLI Tucker-Lewis index, AIC Akaike’s information criterion
^aAttentional – Motor/Nonplanning
^bMotor – Attentional/Nonplanning
^cNonplanning – Attentional/Motor
^dThe model with best fit

ISSN: 1471-244X