. 2006 May 5;16(1):115–121. doi: 10.1007/s00586-006-0098-8

Table 1.

Prevalence of epidural or spinal anaesthesia among different groups

Variable	All subjects (%)	No pain^a (%)	Recurrent pain^b (%)	Continuous pain^c (%)	P-value (no pain vs. recurrent pain + continuous pain)	Non-respondents (%)
Variable	All subjects (%)	No pain^a (%)	Recurrent pain^b (%)	Continuous pain^c (%)	P-value (no pain vs. recurrent pain + continuous pain)	n	P-value^d
Number of subjects (%)	464 (100.0)	264 (56.9)	168 (36.2)	32 (6.9)		175 (100.0)
Epidural or spinal anaesthesia during delivery (Q1)	n=462	n=262	n=168	n=32	0.762	n=173	0.450
Yes	185 (40.0)	100 (38.2)	73 (43.5)	12 (37.5)		75 (43.3)
No	277 (60.0)	162 (61.8)	95 (56.5)	20 (62.5)		98 (56.6)
Epidural or spinal anaesthesia during CS (Q1)	n=85	n=42	n=35	n=8	0.014	n=42	0.663
Yes	77 (90.6)	41 (97.6)	30 (85.7)	6 (75)		37 (88.1)
No	8 (9.4)	1 (2.4)	5 (14.3)	2 (25)		5 (11.9)

Test of difference between groups analysed with Pearson’s chi-square test; statistical testing of non-respondents versus respondents in the last column, LBPP low back pain and pelvic pain, Q1 first questionnaire

^aNo pain denotes respondents reporting remission of LBPP after pregnancy

^bRecurrent pain denotes respondents reporting recurrent LBPP after pregnancy

^cContinuous pain denotes respondents reporting continuous LBPP after pregnancy