Table 3.

Estimated means of secondary outcome measures and estimated effect of treatment

	Treatment group Mean	95% CI	Control group Mean	95%CI	Mean differencea β	95% CI	p
Pain intensityb, week 1 − 18	17.4 n = 26	10.1 − 24.7	20.0 n = 28	13.6 − 26.4
Pain intensityb, week 21 − 30	42.7 n = 25	33.5 − 51.8	46.4 n = 21	37.3 − 55.6	−3.3	−15.1 − 8.5	0.58
Pain intensityb, week 33 − 40	40.3 n = 24	27.9 − 52.8	44.2 n = 21	29.8 − 58.5	−1.6	−19.4 − 16.3	0.86
Pain intensityb, week 1 − 6 after delivery	19.1 n = 24	10.0 − 28.2	12.8 n = 21	3.8 − 21.8	7.8	−4.9 − 20.4	0.22
ODIc, week 18	22.8 n = 26	17.6 − 28.1	21.5 n = 26	17.0 − 26.0
ODIc, week 30	29.7 n = 25	22.1 − 37.2	27.1 n = 21	21.0 − 33.2	−0.9	−8.3 − 6.4	0.80
ODIc, 6 weeks after delivery	9.7 n = 25	4.3 − 15.1	7.1 n = 20	3.2 − 10.9	0.3	−4.9 − 5.4	0.92
EQ-5Dd, week 18	64.9 n = 28	59.2 − 70.7	62.0 n = 26	55.3 − 68.6
EQ-5Dd, week 30	58.3 n = 26	48.9 − 67.7	62.0 n = 21	54.6 − 69.5	−3.3	−14.5 − 7.9	0.56
EQ-5Dd, 6 weeks after delivery	84.7 n = 25	77.8 − 91.6	86.8 n = 20	78.6 − 95.1	−0.8	−11.1 − 9.4	0.87

^aResults from linear regression, adjusting for the relevant outcome measured at baseline

^bPain intensity (numerical rating scale) with possible values 0 to 100, where 0 represents no pain and 100 represents most pain imaginable

^cOswestry disability index with possible values 0 to 100, where 0 represents no disability and 100 represents maximum disability possible

^dEurocol-5D with possible values −7 to 100, where −7 represents poorest health and 100 represents full health

CI confidence interval, ODI Oswestry disability index, EQ-5D Eurocol-5D