Table 3.
Comparison of patients’ characteristics 1 year after surgery
| Characteristic | Survived | Died | Statistical test | p Value |
|---|---|---|---|---|
| Number of patients | 76 | 25 | ||
| Age (years; mean ± SD) | 76.4 ± 5.1 | 75.7 ± 7.6 | Unpaired two-tailed Student’s t test | 0.677 |
| Gender | Chi square test | < 0.001 | ||
| Male | 22 (28.9%) | 20 (80.0%) | ||
| Female | 54 (71.1%) | 5 (20.0%) | ||
| ASA rating | Chi square test | < 0.001 | ||
| II | 24 (31.6%) | 2 (8.0%) | ||
| III | 38 (50.0%) | 6 (24.0%) | ||
| IV | 14 (18.4%) | 17 (68.0%) | ||
| Number of preoperative comorbidities | Chi square test | 0.001 | ||
| ≤ 2 | 48 (63.2%) | 6 (24.0%) | ||
| ≥ 3 | 28 (36.8%) | 19 (76.0%) | ||
| Type of fracture | Chi square test | 0.388 | ||
| Femoral neck fracture | 35 (46.1%) | 14 (56.0%) | ||
| Intertrochanteric fracture | 41 (53.9%) | 11 (44.0%) | ||
| Prefracture ambulatory status | Chi square test | < 0.001 | ||
| Community ambulators | 47 (61.8%) | 7 (28.0%) | ||
| House ambulators | 26 (34.3%) | 6 (24.0%) | ||
| Nonfunctional ambulators | 3 (3.9%) | 12 (48.0%) | ||
| Cognitive ability | Chi square test | 0.04 | ||
| 0 or 1* | 11 (14.5%) | 9 (36.0%) | ||
| 2 | 27 (35.5%) | 9 (36.0%) | ||
| 3 | 38 (50.0%) | 7 (28.0%) | ||
| Side of fracture | Chi square test | 1.00 | ||
| Hemiplegic side | 67 (88.2%) | 22 (88.0%) | ||
| Nonhemiplegic side | 9 (11.8%) | 3 (12.0%) |
* No patient with severe dementia survived at 1 year followup; for purposes of statistical analysis, severe dementia and moderate dementia were combined into one category; SD = standard deviation; ASA = American Society of Anesthesiologists.