Journal of Eating Disorders

Table 2 Discriminative capacity on cognitive flexibility for the DSM-5 severity classification

From: Cognitive flexibility and DSM-5 severity criteria for eating disorders: assessing drive for thinness and duration of illness as alternative severity variables

AN group (n = 100)
WCST T-scores	DSM-5 criteria
	Mild (G1) n = 33		Mod(G2) n = 27		S/E (G3) n = 40		Factor group		Pairwise comparisons
	Mild (G1) n = 33		Mod(G2) n = 27		S/E (G3) n = 40		Factor group		G1–G2	G1–G3	G2–G3
	Mean	SD	Mean	SD	Mean	SD	p	ES	p	p	p
WCST: PctErrors	45.36	11.37	52.44	10.31	46.30	11.24	0.033*	0.068	0.015*	0.719	0.028*
WCST: PctPersRsps	46.91	11.91	55.11	10.71	46.33	10.59	0.004*	0.108^†	0.005*	0.823	0.002*
WCST: PctPersErrors	46.91	11.91	53.74	10.45	46.10	10.63	0.016*	0.082	0.019*	0.756	0.006*
WCST: PctNonPersErrors	45.67	10.69	51.70	10.41	47.23	9.86	0.072	0.053	0.026*	0.521	0.084
WCST: PctCLRsps	44.79	11.75	52.37	10.15	46.05	11.62	0.026*	0.072	0.011*	0.636	0.027*
Deficit	n	%	n	%	n	%	p	ES	G1–G2	G1–G3	G2–G3
Cognitive flexibility	13	40.6%	2	7.4%	11	27.5%	0.015*	0.291^†	0.004*	0.240	0.041*

BSD group (n = 61)
WCST T-scores	DSM-5 criteria
	Mild (G1) n = 22		Mod(G2) n = 21		S/E (G3) n = 18		Factor group		Pairwise comparisons
	Mild (G1) n = 22		Mod(G2) n = 21		S/E (G3) n = 18		Factor group		G1–G2	G1–G3	G2–G3
	Mean	SD	Mean	SD	Mean	SD	p	ES	p	p	p
WCST: PctErrors	41.68	13.12	46.05	9.62	47.94	11.22	0.209	0.052	0.216	0.091	0.608
WCST: PctPersRsps	44.18	14.71	47.05	11.13	50.06	16.48	0.431	0.029	0.510	0.197	0.511
WCST: PctPersErrors	42.95	14.60	46.81	10.98	49.28	16.76	0.367	0.034	0.377	0.166	0.590
WCST: PctNonPersErrors	43.00	11.56	46.86	7.95	48.78	9.06	0.163	0.061	0.198	0.066	0.540
WCST: PctCLRsps	41.73	12.71	45.81	9.71	47.89	11.27	0.219	0.051	0.242	0.092	0.570
Deficit	n	%	n	%	n	%	p	ES	G1–G2	G1–G3	G2–G3
Cognitive flexibility	11	50.0%	5	23.8%	2	11.1%	0.021*	0.355^†	0.046*	0.009*	0.303

AN group anorexia nervosa group, BSD group binge spectrum disorders group, WCST Wisconsin card sorting test, PctErrors percentage of errors, PctPersRsps percentage of perseverative responses, PctPersErrors percentage of perseverative errors, PctNonPersErrors percentage of non-perseverative errors, PctCLRsps percentage of conceptual level responses, Mod moderate, S/E severe/extreme, SD standard deviation, ES effect size [partial eta-squared for ANOVA (η²) and Cramer-V for chi-square test (C-V)]; *Bold: significant comparison; ^†Bold: effect size into the mild/moderate to the high/large range (η² > 0.10 or C-V > 0.15).

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ISSN: 2050-2974

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