Table 3.

Highest upper sensory level in each subgroup

	PIEB bolus volume (mL)
	3 (n = 1)	3.5 (n = 2)	4 (n = 11)	4.5 (n = 4)	5 (n = 21)	5.5 (n = 1)
Highest upper sensory level
T4	0 (0.0)	0(0.0)	0(0.0)	0(0.0)	1(4.8)	0(0.0)
T5	0 (0.0)	0 (0.0)	3(27.3)	1(25.0)	7(33.3)	1(100.0)
T6	1 (100.0)	1(50.0)	5(45.4)	1(25.0)	9(42.9)	0(0.0)
T7	0 (0.0)	0 (0.0)	2(18.2)	1(25.0)	2(9.5)	0(0.0)
T8	0 (0.0)	1(50.0)	1(9.1)	1(25.0)	2(9.5)	0(0.0)

Data are presented as number (percentage)