Table 3.

Associations between pupillometry variables and delirium

Pupillometry variables	Delirium	No delirium	P value
DAY 3
Pupil size, mm	2.4 (2.2–2.9)	2.9 (2.3–3.4)	0.137
Quantitative PLR, % pupil constriction	20 (15–28)	25 (19–31)	0.012
Constriction velocity, mm/s	1.7 (1.4–2.4)	2.5 (1.7–2.8)	0.017
DAY 4
Pupil size, mm	2.7 (2.3–3.2)	3.0 (2.5–4.0)	0.045
Quantitative PLR, % pupil constriction	21 (16–27)	25 (20–33)	0.007
Constriction velocity, mm/s	1.7 (1.5–2.6)	2.2 (2.0–3.2)	0.014
DAY 5
Pupil size, mm	3.1 (2.5–3.8)	3.8 (3.2–4.3)	0.011
Quantitative PLR, % pupil constriction	25 (17–32)	31 (25–37)	0.008
Constriction velocity, mm/s	2.2 (1.5–3.1)	3.5 (2.6–3.6)	0.009

Data are presented as median (25th–75th percentiles)

Abbreviations: CV constriction velocity, PLR pupillary light reflex