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Table 3 Estimated means of secondary outcome measures and estimated effect of treatment

From: Chiropractic management of dominating one-sided pelvic girdle pain in pregnant women; a randomized controlled trial

  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
  1. aResults from linear regression, adjusting for the relevant outcome measured at baseline
  2. bPain intensity (numerical rating scale) with possible values 0 to 100, where 0 represents no pain and 100 represents most pain imaginable
  3. cOswestry disability index with possible values 0 to 100, where 0 represents no disability and 100 represents maximum disability possible
  4. dEurocol-5D with possible values −7 to 100, where −7 represents poorest health and 100 represents full health
  5. CI confidence interval, ODI Oswestry disability index, EQ-5D Eurocol-5D