Table 3: Health related quality of life (IRES-24-questionnaire).

IRES-dimensionsBaseline valuesEffect sizes: SRM (SES)
Total sampleWomenMenTotal sample ( 𝑁 m a x = 4 1 8 ) Women ( 𝑁 m a x = 3 5 3 ) Men ( 𝑁 m a x = 6 7 )
Mean (SD)Mean (SD)Mean (SD)t0–t4t0–t4t0–t4

Somatic health6.14 (2.69)6.13 (2.68)6.63 (2.26)0.74 (0.57)0.72 (0.55)0.83 (0.69)
Mental health5.52 (2.07)5.37 (2.04)6.42 (2.03)0.79 (0.75)0.79 (0.77)0.80 (0.70)
Activities of daily living7.21 (2.20)7.20 (2.24)7.58 (1.96)0.55 (0.42)0.52 (0.40)0.79 (0.54)
Pain5.60 (2.54)5.47 (2.48)6.40 (2.40)0.65 (0.54)0.64 (0.55)0.69 (0.52)
IRES-24-sum score6.12 (1.82)6.04 (1.82)6.76 (1.53)0.97 (0.74)0.95 (0.73)1.13 (0.88)

Data are presented as standardized response means (SRMs), and standardized effect sizes (SESs). All changes were significant (P-values determined by Paired-samples-t-tests: 𝑃 < . 0 0 1 ). Baseline values range from 0 to 10, 10 representing least restrictions of HRQOL. t0 = start of participation, 𝑡 4 = 1 2 months after the start.