Table 2.

MoCA items mean scores and MoCA score range of groups after the surgery

MoCA items	NIRS Group (n = 43)		no NIRS Group (n = 36)
	Mean	SD	Mean	SD
Alternating trail making	0.74	0.43	0.52	0.49
Visuoconstructional skills (cylinder)	0.88	0.32	0.66	0.47
Visuoconstructional skills (clock)	2.59	0.49	2.25	0.59
Naming	2.73	0.47	2.52	0.68
Memory	3.98	1.25	1.39	0.72
Attention	1.99	0.77	1.92	0.87
Vigilance	0.83	0.37	0.80	0.39
Serial 7s	2.52	0.62	2.81	0.46
Sentence repetition	1.86	1.05	1.75	1.13
Verbal fluency	0.71	0.48	0.76	0.41
Abstraction	1.97	0.81	1.80	0.76
Delayed recall	5.53	0.60	5.45	0.64
Mean MoCA scores	26.8	1.9	23.8	2.5
MoCA score range	21–30		17–30

MoCA: Montreal Cognitive Assessment; NIRS: near infrared spectroscopy; SD: standard deviation