Patient characteristics
| 2 mg (n=119) | 5 mg (n=120) | 8 mg (n=120) | P values | |
| Age (years) | 44.5±15.7 | 46.6±16.6 | 46.7±15.9 | 0.480 |
| Sex (male/female) | 58/61 | 69/51 | 56/64 | 0.205 |
| BMI (kg/m²) | 25.0±4.0 | 25.7±4.1 | 26.5±4.9 | 0.036* |
| ASA physical status (I/II/III) | 65/50/4 | 66/52/2 | 60/56/4 | 0.522 |
| Types of surgery (hand/wrist/forearm/elbow) | 48/46/17/8 | 65/33/17/5 | 56/36/21/7 | 0.394 |
Continuous variables are presented as mean±SD; categorical variables are presented as counts.
*Statistically significant difference: 8 mg vs 2 mg and 5 mg.
ASA, American Society of Anesthesiologists; BMI, body mass index.