Table 2

Responsiveness: Mean EQ-5D and SF-6D changes scores for each of the three post-intervention groups.

Pain

Stiffness

Functioning

Overall (WOMAC₉₆)

WOMAC change

EQ-5D

SF-6D

EQ-5D

SF-6D

EQ-5D

SF-6D

EQ-5D

SF-6D

No improvement

-0.030

(124)

0.022*

(123)

0.024

(156)

0.029‡

(152)

-0.018

(114)

0.021*

(111)

-0.036

(103)

0.021

(100)

Improved <20%

0.140†

(48)

0.031

(45)

0.038

(17)

0.014

(15)

0.072*

(71)

0.026*

(67)

0.091†

(80)

0.023

(78)

Improved ≥ 20%

0.119‡

(141)

0.045‡

(134)

0.110‡

(141)

0.042‡

(136)

0.132‡

(127)

0.050‡

(123)

0.127‡

(128)

0.053‡

(122)

ANOVA (F-score)

12.80‡

1.19

3.74*

0.64

9.49†

1.98

11.16‡

2.50

The number of participants in each group are reported in brackets (N), results of the paired t-tests and ANOVA are also noted (* p < 0.05, † p < 0.01, and ‡ p < 0.001).

Barton et al. Cost Effectiveness and Resource Allocation 2009 7:12   doi:10.1186/1478-7547-7-12