Table 3.

Comparison of Cognitive Test Performance T-scores of Bariatric Surgery Patients (n = 95) and Obese Controls (n = 42).

	Baseline		12-week follow-up		12-month follow-up
Cognitive Test	Bariatric surgery	Obese controls	Bariatric surgery	Obese controls	Bariatric surgery	Obese controls
Memory*†
Learning	42.85 ± 12.85	45.10 ± 1.90	45.68 ± 14.20	40.87 ± 2.19	50.55 ± 13.22	46.50 ± 2.17
Short Delay	46.07 ± 10.48	47.26 ± 1.62	47.75 ± 12.58	44.07 ± 2.01	52.23 ± 10.43	49.38 ± 1.71
Long Delay	45.93 ± 10.89	48.76 ± 1.11	48.55 ± 13.14	44.44 ± 2.09	53.04 ± 9.80**	48.53 ± 1.65
Recognition	41.33 ± 10.39	44.02 ± 1.63	51.37 ± 10.52	49.41 ± 1.73	49.09 ± 9.40**	44.75 ± 1.57
Attention*
Digit Span	50.07 ± 9.06	49.69 ± 1.37	51.85 ± 10.80	50.97 ± 1.63	53.44 ± 10.94	51.56 ± 1.62
SOA - Number	54.67 ± 14.49	51.84 ± 2.17	58.49 ± 13.69	54.97 ± 2.06	61.39 ± 14.97	57.05 ± 2.35
VI-Word	53.20 ± 12.55	48.56 ± 2.13	55.01 ± 12.68	50.27 ± 2.09	56.40 ± 14.88	51.57 ± 2.30
Executive Function*
SOA - Letter/Number	52.29 ± 15.16	51.02 ± 2.21	57.83 ± 12.68	54.41 ± 1.92	58.04 ± 13.38	54.81 ± 2.08
VI-Color-Word	55.23 ± 12.40	53.58 ± 1.97	63.05 ± 13.03	60.33 ± 1.91	62.40 ± 12.18	60.67 ± 1.98
Maze Errors	49.81 ± 12.89	42.51 ± 2.15	55.69 ± 11.82	50.72 ± 1.87	53.77 ± 11.26	48.31 ± 1.99
Language
Letter Fluency	47.00 ± 11.51	48.69 ± 1.80	46.93 ± 10.14	49.60 ± 1.73	47.54 ± 11.25	48.02 ± 1.7
Animal Fluency	50.66 ± 10.64	47.95 ± 1.62	50.20 ± 10.14	48.91 ± 1.60	50.38 ± 11.07	48.22 ± 1.73

Note.

^*Main effect for time point;

^†Significant group × time interaction;

^**significant group difference at time point (p < .05);

SOA = switching of attention; VI = verbal interference