Table 3.

Blockade latency and surgical time per group.

Technique variables	0.25% Group (n = 15)	0.5% Group (n = 15)	p
Latency (min)			0.004
Mean (standard deviation)	17.3 (5.3)	10.7 (3.7)
Median	20	10
Duration of surgery (min)
Mean (standard deviation)	88.6 (49.8)	83.9 (44.9)	0.41
Median	70	70

Student's t-test.