Table 2.

Differences in cognitive performance between groups with and without objective cognitive impairment

Cognitive indexes	Patients without cognitive deficit (n = 56)	Patients with cognitive deficit (n = 24)	p (< 0.05)
Attention	0.31 (− 1.15 to 2.35)	− 0.19 (− 1.70 to 1.09)	0.012
Learning memory	0.14 (− 0.99 to 2.23)	− 0.53 (− 1.79 to 0.75)	< 0.001
Delayed recall	0.14 (− 1.39 to 1.72)	− 0.41(− 1.99 to 1.28)	< 0.001
Recognition memory	0.25 (− 1.80 to 1.48)	− 0.55 (− 4.42 to 0.96)	0.002
Working memory	0.49 (− 0.89 to 3.00)	0.15 (− 1.47 to 1.62)	0.004
Processing speed	− 0.19 (− 1.65 to 1.41)	− 1.57 (− 7.64 to 0.34)	< 0.001
Executive function	− 0.12 (− 1.84 to 1.68)	− 1.55 (− 4.61 to 0.02)	< 0.001