Baseline à End-program                                                Baseline à Follow-up

                                                                    Mean                                                Effect                    Mean                                              Effect

                                                                    change            t               p                size                     change              t               p         size                                              

Disability (RMDS)                                          -4.26             -4.9         .000***            1.25                -5.53             -5.5         .000***            1.33

Perceived stress (PSS)                                 -0.31            -3.4         .003**          0.54                    - 0.34             -2.7         .016*               0.44

Health Scales (SF-36)                                        

      Physical health                                       0.47              4.5         .000***        1.00                     0.66              7.5         .000***            1.29

            Physical functioning                         0.52              4.5         .000***         1.00                     0.27              4.8         .000***            0.84

            Role—physical                                  0.56              3.4         .003**           0.79                    0.83              5.8         .000***            1.11

            Bodily pain                                        - 0.73           -4.6         .000***        1.00                    -1.05             -6.1         .000***            1.33

            General health                                 0.08              1.0         .341                0.29                    0.20              2.4         .026*               0.46

      Mental health                                        0.28              3.3         .003**           0.59                     0.39              4.0         .001**              0.73

            Vitality                                             0.35              2.4         .025*              0.46                    0.62             -4.0         .001**              0.91

            Social functioning                             -0.02            -0.3        .747                0.20                    0.00              0.0        1.000                0.13

            Role—emotional                               0.39              2.6         .017*            0.46                     0.44              3.0         .007**              0.41

            Mental well-being                            0.39              3.1         .005**           0.65                     0.52             -3.3         .004**              0.75

      Change in health                                   0.55              2.7         .015*             0.58                     0.68              2.5         .027*               0.89

Mood disturbance (POMS)                            - 0.34           -3.2         .004**          0.61                    - 0.46             -4.4         .000***            0.73

      Tension/anxiety                                     - 0.28            -2.0         .064~           0.35                    - 0.40             -2.9         .010**              0.50

      Depression/dejection                            - 0.39            -3.1         .006**          0.65                    - 0.38             -3.3         .004**              0.58

      Anger/hostility                                       - 0.42            -3.7         .001**          0.75                    - 0.39             -3.1         .006**              0.58

      Fatigue                                                   - 0.42           -2.6         .016*            0.46                    - 0.72             -3.5         .003**              0.70

      Confusion/bewilder-                              - 0.32            -2.2         .042*            0.60                    -2.78             -3.5         .002**              0.46

      Vigor/activity                                          0.20              0.8         .444               0.20                    0.54              2.6         .019*               0.57

Bothersomeness                                          - 2.40           -4.7         .000***        1.29                    -3.03             -6.0         .000***            1.53

Use of medication                                            -0.14         -1.4         .186                0.28                  0.00              0.0        1.000                0.12