Table 1.
Comparison of general characteristics among the three groups (x̅ ± s)
| Items | SA group (n=31) | SC group (n=31) | GA group (n=30) | F/χ2 | P value |
|---|---|---|---|---|---|
| Sex ratio (male/female) | 14/17 | 15/16 | 17/13 | 1.571 | 0.652 |
| ASA ratio (II/III) | 11/20 | 14/17 | 15/15 | 0.616 | 0.511 |
| Age (years) | 71.21±6.09 | 71.56±5.61 | 71.30±6.94 | 1.289 | 0.842 |
| BMI (kg/m2) | 22.74±4.12 | 23.33±4.13 | 22.03±2.63 | 1.561 | 0.650 |
| Surgery duration | 277.00±79.45 | 265.33±95.50 | 230.35±78.45 | 2.098 | 0.154 |
| Mean preoperative blood pressure | 87.82±1.01 | 90.01±0.95 | 88.55±1.10 | 1.996 | 0.319 |
| Preoperative oxygen saturation | 97.58±1.85 | 97.24±1.33 | 98.04±1.03 | 0.901 | 0.428 |
| Preoperative heart rate | 75.01±2.10 | 71.33±2.02 | 76.56±2.35 | 0.798 | 0.821 |
| Blood loss | 81.01±49.32 | 79.32±39.00 | 76.78±49.61 | 0.401 | 0.950 |
| Transfusion volume | 1852.00±781.29 | 1736.00±484.15 | 1603.32±450.00 | 1.987 | 0.367 |
Notes: ASA: American Society of Anesthesiologists; BMI: Body mass index.