Table 1.
Patient characteristics
| Characteristics | R1 (n = 33) | R2 (n = 33) | P (n = 33) | P value |
|---|---|---|---|---|
| Age: year, mean (SD) | 66.4 (4.8) | 65.5 (5.2) | 66.2 (5.0) | 0.721 |
| Male sex: no. (%) | 19 (57.6) | 22 (66.7) | 21 (63.6) | 0.739 |
| Height: cm, mean (SD) | 161.7 (8.2) | 160.8 (7.6) | 162.6 (7.1) | 0.658 |
| Weight: kg, mean (SD) | 59.6 (10.5) | 60.6 (12.3) | 61.5 (10.2) | 0.789 |
| BMI: kg/m2, mean (SD) | 22.7 (3.0) | 23.4 (3.9) | 23.2 (3.0) | 0.703 |
| ASA score: no. (%) | ||||
| Grade I | 18 (54.5) | 24 (72.7) | 18 (54.5) | 0.218 |
| Grade II | 15 (45.5) | 9 (27.3) | 15 (45.5) | 0.218 |
| Education degree: no. | 0.649 | |||
| University diploma and above | 8 | 7 | 7 | |
| Senior high school | 7 | 12 | 8 | |
| Junior high school | 7 | 9 | 9 | |
| Primary school and below | 11 | 5 | 9 | |
| History, yes: no. (%) | ||||
| Hypertension | 15 (45.5) | 11 (33.3) | 14 (42.4) | 0.580 |
| Diabetes | 6 (18.2) | 6 (18.1) | 5 (15.2) | 0.931 |