Table 1.
Comparison of Baseline Demographics and Characteristics of Geriatric Hip Fracture Patients With and Without Postoperative Delirium.a
| Baseline Characteristic | Postoperative Delirium (n = 2569) | No Postoperative Delirium (n = 5870) | P Value |
|---|---|---|---|
| Age (years, median)b | 86 | 84 | <.001 |
| Female (%) | 70.5% | 71.9% | .164 |
| White (%) | 92.8% | 94.6% | .003 |
| Body mass index (BMI)c | 24.3 ± 5.5 | 25.1 ± 5.6 | .084 |
| Functional health status | <.001 | ||
| Independent | 63.5% | 82.8% | |
| Partially dependent | 31.7% | 14.7% | |
| Totally dependent | 4.8% | 2.5% | |
| ASA classification (continuous)c | 3.2 ± 0.6 | 3.0 ± 0.6 | <.001 |
| ASA classification (ordinal) | <.001 | ||
| 1 | 0.2% | 0.4% | |
| 2 | 8.4% | 16.8% | |
| 3 | 63.2% | 62.2% | |
| 4 | 28.0% | 20.5% | |
| 5 | 0.2% | 0.1% | |
| Dementia (%) | 54.4% | 21.4% | <.001 |
| Preoperative delirium (%) | 33.9% | 3.5% | <.001 |
| Diabetes (%) | 16.4% | 18.1% | .061 |
| Smoker, current (%) | 7.4% | 8.9% | .054 |
| COPD (%) | 11.5% | 10.4% | .111 |
| Ascites (%) | 0.2% | 0.3% | .431 |
| CHF (%) | 5.0% | 3.7% | .005 |
| Hypertension (%) | 70.5% | 68.4% | .060 |
| Dialysis (%) | 1.8% | 1.7% | .778 |
| Hip fracture pattern | .060 | ||
| Femoral neck | 39.1% | 38.1% | |
| Intertrochanteric | 55.9% | 55.0% | |
| Subtrochanteric | 5.0% | 6.9% |
Abbreviations: ASA, American Society of Anesthesiologists; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease.
aAll other comparisons performed using χ2 analysis.
bStatistical comparison performed using independent samples median test.
cStatistical comparison performed using independent sample t test.