Table 1 Univariate analysis of 4AT score risk factors and correlates among 324 older patients
From: Edmonton frailty scale score predicts postoperative delirium: a retrospective cohort analysis
Parameter | 4AT < 4 | 4AT ≥ 4 | P |
|---|---|---|---|
Total, n (%) | 309 (95.4) | 15 (4.6) | |
Demographics | |||
Sex, n (%) | 0.79 | ||
Female | 123 (96.1) | 5 (3.9) | |
Male | 186 (94.9) | 10 (5.1) | |
Race, n (%) | 0.43 | ||
Caucasian | 238 (95.8) | 10 (4.2) | |
Black | 61 (92.4) | 5 (7.6) | |
Other | 20 (100.0) | 0 (0.0) | |
Age, y | |||
Mean (SD) | 73.1 (6.2) | 77.5 (6.3) | 0.007 |
Median (IQR) | 72.0 (68.0–77.0) | 79.0 (71.0–82.0) | 0.17 |
Surgical characteristics and comorbidities | |||
ASA status, n (%) | 0.02 | ||
2 | 92 (97.9) | 2 (2.1) | |
3 | 197 (95.2) | 9 (4.4) | |
4 | 20 (87.0) | 4 (16.7) | |
Total anesthesia time, min | |||
Mean (SD) | 237.7 (117.7) | 241.8 (147.8) | 0.90 |
Median (IQR) | 207.0 (160.0–207.0) | 209 (83.0–373.0) | 0.79 |
Total units RBC infused | |||
Mean (SD) | 0.1 (0.5) | 0.3 (0.6) | 0.12 |
Median (IQR) | 0.0 (0.0–0.0) | 0.0 (0.0–0.0) | 0.0003 |
Elixhauser 30-day readmission score | |||
Mean (SD) | 21.7 (23.5) | 58.3 (43.4) | 0.0056 |
Median (IQR) | 15.0 (5.0–29.0) | 55.0 (17.0–92.0) | 0.003 |
Elixhauser mortality score | |||
Mean (SD) | 4.4 (10.2) | 13.9 (18.9) | 0.001 |
Median (IQR) | 3.0 (−1.0–8.0) | 10.0 (1.0–30.0) | 0.06 |
EFS total score ≥ 6, n (%) | 0.0007 | ||
No | 236 (97.9) | 5 (2.1) | |
Yes | 73 (88.0) | 10 (12.1) | |
Anesthesia type, n (%) | 0.07 | ||
Regional | 23 (95.8) | 1 (4.2) | |
MAC | 13 (81.3) | 3 (18.8) | |
Spinal/epidural | 26 (100.0) | 0 (0.0) | |
General | 247 (95.7) | 11 (4.3) | |
Surgical service area, n (%) | 0.09 | ||
General | 141 (97.9) | 3 (2.1) | |
Neurosurgery | 12 (92.3) | 1 (7.7) | |
Orthopedics | 30 (100.0) | 0 (0.0) | |
Urology | 35 (92.1) | 3 (7.9) | |
Vascular | 80 (92.0) | 7 (8.1) | |
Othera | 11 (91.7) | 1 (8.3) | |
Characteristics at or after hospital discharge | |||
Length of stay, days | |||
Mean (SD) | 3.9 (4.4) | 8.0 (10.8) | 0.0015 |
Median (IQR) | 2.3 (1.3–4.4) | 3.9 (1.4–9.2) | 0.79 |
Discharge disposition, n (%) | < 0.0001 | ||
Expired | 0 (0.0) | 3 (100.0) | |
Home- / self- / home-health-care | 264 (98.1) | 5 (1.9) | |
Skilled nursing facility | 40 (87.0) | 6 (13.0) | |
Rehab/other | 5 (83.3) | 1 (16.7) | |
30-Day mortality, n (%) | 0.0003 | ||
No | 308 (96.3) | 12 (3.8) | |
Yes | 1 (25.0) | 3 (75.0) | |