Table 2.

Cerebral autoregulatory index (AI)

Parameter	whole cohort	no delirium	delirium	p value
AI	0.18 (0.44)	0.19 (0.39)	0.17 (0.58)	0.92
AI dcr	0.18 (0.44)	0.16 (0.48)	0.25 (0.36)	0.63
AI incr	0.18 (0.59)	0.21 (0.39)	0.1 (0.9)	0.66

Values are given as mean (±SD) of the averaged individual values. P value is given for unpaired, two-tailed Student’s t-test comparing no delirium and delirium group

AI = autoregulatory index, AI _dcr/incr = autoregulatory index for decreasing/increasing MAP