Table 1. Patient Demographics of OS Patients and OPD Patients.
| Characteristic | TKR (n = 79) | THR (n = 38) | ITF surgery (n = 53) | FNF surgery (n = 52) | Overall OS patients (n = 222) | OPD patients (n = 364) | p-value* |
|---|---|---|---|---|---|---|---|
| Age (yr) | 70.3 ± 6.2 | 60.9 ± 13.3 | 77.5 ± 8.9 | 69.4 ± 10.7 | 70.2 ± 10.8 | 63.6 ± 13.6 | <0.001 |
| Female (%) | 91.1 | 69.1 | 62.3 | 69.2 | 68.0 | 86.8 | <0.001 |
| Height (cm) | 153.7 ± 6.9 | 163.2 ± 10.6 | 157.0 ± 9.2 | 159.3 ± 7.2 | 157.4 ± 8.9 | 154.8 ± 8.7 | 0.001 |
| Weight (kg) | 63.2 ± 9.9 | 62.5 ± 11.2 | 56.1 ± 10.1 | 56.0 ± 9.0 | 59.7 ± 10.5 | 60.0 ± 13.7 | 0.766 |
| Body mass index (kg/m2) | 26.8 ± 3.1 | 23.4 ± 3.4 | 22.6 ± 3.8 | 21.9 ± 3.8 | 24.1 ± 4.0 | 24.9 ± 4.2 | 0.015 |
| Total hip BMD (g/cm2) | 0.815 ± 0.107 | 0.887 ± 0.153 | 0.662 ± 0.145 | 0.723 ± 0.136 | 0.771 ± 0.153 | 0.826 ± 0.159 | <0.001 |
Values are presented as mean ± standard deviation.
OS: orthopedic surgery, OPD: outpatient department, TKR: total knee replacement, THR: total hip replacement, ITF: intertrochanteric fracture, FNF: femoral neck fracture, BMD: bone mineral density.
*Unpaired Student t-test and chi-square test.