Table 1 PND17 related factors and assignments.

From: Analysis of risk factors related to perioperative neurocognitive disorders in elderly patients with hip fractures

Factors

Variable

Assignments and Units

Gender

X1

Male = 1, Female = 2

Age

X2

Units: years

ASA class

X3

Class I=1, Class II=2, Class III=3, Class IV=4

Surgical type

X4

Elective surgery = 1, Emergency surgery = 2

Surgical duration

X5

Units: min

Anesthesia methods

X6

General anesthesia = 1, Combined spinal epidural anesthesia = 2

Nerve block

X7

With = 1, Without = 0

Time to ground

X8

Units: days

Length of hospitalization

X9

Units: days

Postoperative 6 h VAS scores

X10

Units: scores

Postoperative 12 h VAS scores

X11

Units: scores

Postoperative 24 h VAS scores

X12

Units: scores

Postoperative 48 h VAS scores

X13

Units: scores

Lower limb thrombosis

X14

With = 1, Without = 0

CRP

X15

Units: mg/L

PCT

X16

Units: ng/ml

BL-6

X17

Units: pg/ml

PND

Y

Non-PND = 0, PND = 1