An optimal epidural catheter placement site for post-cesarean section analgesia with double-space technique combined spinal–epidural anesthesia: a retrospective study

JA Clinical Reports

Table 2 Numbness in the lower extremities and analgesic effects

Numbness	Yes (n = 67)	No (n = 138)	P value^†
Mean PHPS
POD1	2.0 [1.3–2.7]	2.0 [1.5–2.7]	0.86
POD2	2.0 [1.0–2.5]	2.0 [1.0–2.0]	0.23
POD3	1.7 [1.0–2.0]	1.0 [1.0–2.0]	0.12
Number of additional analgesics up to POD1-3	2 [0–4]	1 [0–1]	< 0.001
Period of PCEA use (days)	3 [3–4]	3 [3–4]	0.14

Data are expressed as median [interquartile range]
PHPS Prince Henry Pain Scale, POD postoperative day, PCEA patient-controlled epidural analgesia
^†Mann–Whitney U test