Risk Factors and a Nomogram Model Establishment for Postoperative Delirium in Elderly Patients Undergoing Arthroplasty Surgery: A Single-Center Retrospective Study
Table 1
Baseline characteristics of before and after PSM.
Characteristics
Before PSM
After PSM
POD (65)
NPOD (195)
value
POD (58)
NPOD (58)
value
Mean (SD) age (years)
0.046
0.309
Sex (%)
0.806
0.656
Male
16 (24.6)
51 (26.2)
14 (24.1)
12 (20.7)
Female
49 (75.4)
144 (73.8)
44 (75.9)
46 (79.3)
Smoking (%)
0.439
1
Yes
6 (9.2)
25 (12.8)
6 (10.3)
6 (10.3)
No
59 (91)
170 (87.2)
52 (89.7)
52 (89.7)
Drinking (%)
0.166
0.508
Yes
4 (6.2)
24 (12.3)
4 (6.9)
6 (10.3)
No
61 (93.8)
171 (87.7)
54 (93.1)
52 (89.7)
Diabetes (%)
0.328
0.573
Yes
20 (30.8)
48 (24.6)
18 (31.0)
15 (25.9)
No
45 (69.2)
147 (75.4)
40 (69.0)
43 (74.1)
Hypertension (%)
0.430
0.71
Yes
32 (49.2)
107 (54.9)
30 (51.7)
28 (48.3)
No
33 (50.8)
88 (45.1)
28 (48.3)
30 (51.7)
Coronary heart disease (%)
0.928
0.498
Yes
13 (20.0)
38 (19.5)
11 (19.0)
14 (24.1)
No
52 (80.0)
157 (80.5)
47 (81.0)
44 (75.9)
Mental illness or psychotropic drug use (%)
0.068
1
Yes
10 (15.4)
15 (7.7)
5 (8.6)
5 (8.6)
No
55 (84.6)
180 (92.3)
53 (91.4)
53 (91.4)
Blood transfusion (%)
0.037
1
Yes
20 (30.8)
36 (18.5)
14 (24.1)
14 (24.1)
No
45 (69.2)
159 (81.5)
44 (75.9)
44 (75.9)
Anesthesia (%)
1
1
General anesthesia
65 (100.0)
195 (100.0)
58 (100.0)
58 (100.0)
Others
0 (0)
0 (0)
0 (0)
0 (0)
Surgical approach (%)
0.031
0.170
Hip replacement
61 (93.8)
162 (83.1)
54 (93.1)
57 (98.3)
Knee replacement
4 (6.2)
33 (16.9)
4 (6.9)
1 (1.7)
Surgical grade (%)
0.102
0.782
3
57 (87.7)
153 (78.5)
50 (86.2)
51 (87.9)
4
8 (12.3)
42 (21.5)
8 (13.8)
7 (12.1)
Mean (SD) ejection fraction
0.776
0.599
Left ventricular diastolic dysfunction (%)
0.474
0.298
Yes
57 (87.7)
177 (90.8)
52 (89.7)
55 (94.8)
No
8 (12.3)
18 (9.2)
6 (9.3)
3 (5.2)
Significant values are in bold (). SD: standard deviation; PSM: propensity score matching; POD: postoperative delirium.
