Table 4: SF-36 scores by intervention and control groups.

Time 1Time 2Time 3Time 4Effect size
Mean SD95% CIMean SD95% CIMean SD95% CIMean SD95% CI 95% CI value

Physical functioning: PF
 Intervention3985.912.881.74–90.0587.712.283.74–91.6489.19.586.04–92.1787.719.181.52–93.870.0984.86–90.340.7660.024
 Control2884.610.480.59–88.6981.89.778.01–85.5686.48.982.97–89.8886.813.981.4–92.2081.68–88.14

Role-physical: RP
 Intervention393435.122.59–45.3637.240.524.05–50.3155.842.741.92–69.6272.431.362.29–82.580.1241.57–58.110.9430.010
 Control282531.212.91–37.093335.419.31–46.7653.640.138.03–69.126740.951.12–82.8134.88–54.40

Bodily pain: BP
 Intervention3952.821.845.76–59.8866.319.360.03–72.5366.320.259.72–72.8470.320.663.66–77.010.4859.42–68.440.4930.000
 Control2853.92046.11–61.606816.661.58–74.4265.821.957.34–74.3067.718.960.36–75.0058.52–69.16

General health: GH
 Intervention3951.316.545.95–56.625216.546.61–57.3455.616.850.18–61.1058.618.152.73–64.451.2550.10–58.640.2680.006
 Control2856.115.150.30–61.995313.147.96–58.1158.81652.53–64.975815.152.13–63.8751.44–61.52

Vitality: VT
 Intervention3953.820.347.26–60.4354.522.947.06–61.9161.722.254.46–68.8767.421.860.36–74.513.1153.80–64.920.0820.010
 Control2854.820.446.92–62.7353.915.447.97–59.8855.423.546.23–64.4859.121.750.68–67.5349.24–62.36

Social functional: SF
 Intervention3957.127.348.19–65.9157.727.948.65–66.7467.625.459.38–75.8878.821.172.01–85.690.1559.54–71.070.6990.001
 Control2859.822.151.24–68.415424.144.69–63.3566.12357.14–75.0177.723.468.60–86.7657.60–71.20

Role-emotional: RE
 Intervention3943.64229.98–57.21534737.77–68.2269.241.555.79–82.6776.131.565.87–86.280.2151.29–69.660.6470.015
 Control2836.942.920.28–53.5438.141.322.08–54.1165.54448.43–82.5272.641.656.48–88.7642.44–64.12

Mental health: MH
 Intervention39532146.23–59.8264.22356.75–71.6771.521.164.66–78.3276.617.470.98–82.267.4861.45–71.220.008*0.004
 Control2860.120.852.06–68.2264.418.657.20–71.666321.254.78–71.2369.914.764.17–75.5458.59–70.13

P < .05.