Table 1.
Characteristics of the study participants
| Variable | |
|---|---|
| Gender, N (%) | |
| Men | 310 (61) |
| Women | 191 (39) |
| Age, M ± SD | 66.9±14.08 |
| ASA, N (%) | |
| 1: A normal healthy patient | 40 (10) |
| 1/2: | 5 (1.3) |
| 2: A patient with mild systemic disease | 143 (37) |
| 2/3: | 42 (11) |
| 3: A patient with severe systemic disease | 132 (34) |
| 3/4: | 18 (4.6) |
| 4: A patient with severe systemic disease that is a constant threat to life | 8 (2) |
| Missing data | 113 (23) |
| Type of anesthesia, N (%) | |
| Missing data | 3 (0.6) |
| Local | 41 (8.1) |
| General | 305 (61) |
| Spinal | 139 (28) |
| Combined general and spinal | 13 (2.7) |
Abbreviations: M, mean; SD, standard deviation; ASA, American Society of Anesthesiologists.