Table 2.

Phase angle and temperature.

	All Patients (n = 109)	Group R (n = 50)	Group N (n = 59)	p-Value
Phase angle value
T0	6.42 ± 8.3	7.63 ± 12.0	5.40 ± 1.5	0.944
T5	6.64 ± 9.2	8.09 ± 13.4	5.42 ± 1.6	0.733
Phase angle change	0.22 ± 1.8	0.46 ± 2.3	0.02 ± 1.3	0.594
Phase angle change ratio	0.05 ± 0.4	0.09 ± 0.6	0.02 ± 0.3	0.713
Temperature change	−0.08 ± 0.2	−0.08 ± 0.2	−0.07 ± 0.2	0.933

All data are presented as the mean ± SD. T0: before treatment; T5: 5 min following the block; Phase angle change (phase angle at T5 − phase angle at T0); Phase angle change ratio (phase angle at T5 − phase angle at T0/phase angle at T0); Temperature change (temperature at T5 − temperature at T0); Group R: patients who showed a reduction of ≥50% on the numerical rating scale for pain 30 min following the block; Group N: patients who showed a reduction less than 50%; p-value < 0.05 was considered statistically significant.