Table 2

Outcome variables at baseline, 3 months and 12 months after surgery

Outcome variable

Baseline

Mean (95% CI)§

3 months

Mean (95% CI)§

12 months

Mean (95% CI)§

P value*


EQ-5D, total score

0.32 (0.26 - 0.38)

0.63 (0.57 - 0.68)

0.60 (0.53 - 0.66)

< 0.001

EQ-VAS, current health

48.0 (44.1 - 51.9)

62.0 (58.5 - 65.6)

60.4 (55.6 - 65.2)

< 0.001

Oswestry Disability Index

44.2 (40.6 - 47.9)

25.6 (21.9 - 29.3)

27.9 (23.4 - 32.5)

< 0.001

VAS, back pain

55.7 (50.5 - 60.9)

30.0 (25.0 - 35.0)

35.9 (29.3 - 42.4)

< 0.001

VAS, leg pain

60.2 (55.2 - 65.2)

26.4 (20.7 - 32.0)

33.6 (27-0 - 40.1)

< 0.001


*P values for all outcome variables at both time intervals were P < 0.001. §CI; confidence interval. VAS; visual analogue scale. EQ-5D; EuroQol-5 D, instrument for assessing health related quality of life

Jakola et al. BMC Surgery 2010 10:34   doi:10.1186/1471-2482-10-34

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