Group A (n = 31)

Group B (n = 31)

Group C (n = 31)

p value

Group A vs. B

Group A vs. C

Group B vs. C

Onset of sensory block (min.)

9.55 ± 1.40

10.06 ± 1.41

9.71 ± 1.28

0.3

0.319

0.43

Onset of motor block (min.)

18.52 ± 1.61

19.02 ± 1.55

19.35 ± 1.50

0.09

0.2

0.107