Table 9 Summary table of the 95% CI of mean difference, correlation coefficient, and p value between FJS-12 baseline and FJS-12 follow-up in individual questions using paired T-tests after applying bootstrapping with N = 200 and N = 1000

FJS-12 Q01 Baseline – FJS-12 Q01 Follow-up

-0.21

-0.46—0.00

-0.42—0.00

0.87

0.73—0.95

0.70—0.95

0.10

0.10

0.09

FJS-12 Q02 Baseline – FJS-12 Q02 Follow-up

0.08

-0.19—0.36

-0.13—0.29

0.86

0.73—0.93

0.70—0.94

0.54

0.51

0.52

FJS-12 Q03 Baseline – FJS-12 Q03 Follow-up

0.17

-0.34—0.68

-0.25—0.58

0.62

0.26—0.87

0.28—0.83

0.50

0.48

0.49

FJS-12 Q04 Baseline – FJS-12 Q04 Follow-up

-0.38

-0.90—0.15

-0.83—0.00

0.64

0.34—0.86

0.25—0.86

0.15

0.17

0.16

FJS-12 Q05 Baseline – FJS-12 Q05 Follow-up

-0.25

-0.88—0.38

-0.83—0.29

0.36

-0.11—0.72

-0.08—0.74

0.42

0.41

0.42

FJS-12 Q06 Baseline – FJS-12 Q06 Follow-up

-0.04

-0.46—0.38

-0.46—0.33

0.60

0.00—0.95

-0.12—0.96

0.84

0.88

0.85

FJS-12 Q07 Baseline – FJS-12 Q07 Follow-up

-0.29

-0.73—0.15

-0.63—0.04

0.61

0.29—0.84

0.24—0.84

0.18

0.20

0.18

FJS-12 Q08 Baseline – FJS-12 Q08 Follow-up

-0.38

-0.82—0.07

-0.79—0.00

0.54

0.05—0.89

-0.02—0.90

0.10

0.14

0.13

FJS-12 Q09 Baseline – FJS-12 Q09 Follow-up

-0.08

-0.41—0.24

-0.33—0.21

0.72

0.37—0.87

0.33—0.89

0.60

0.61

0.59

FJS-12 Q10 Baseline – FJS-12 Q10 Follow-up

0.04

-0.45—0.53

-0.38—0.46

0.44

0.00—0.82

-0.05—0.84

0.86

0.88

0.86

FJS-12 Q11 Baseline – FJS-12 Q11 Follow-up

-0.17

-0.46—0.13

-0.42—0.04

0.80

0.53—0.92

0.56—0.90

0.26

0.28

0.27

FJS-12 Q12 Baseline – FJS-12 Q12 Follow-up

-0.21

-0.62—0.20

-0.56—0.13

0.66

0.32—0.84

0.37—0.82

0.31

0.32

0.30

FJS-12 Total Baseline – FJS-12 Total Follow-up

3.26

-3.24—10.36

-2.64—10.02

0.79

0.58—0.92

0.60—0.88

0.29

0.31

0.27

OKS Q01 Baseline – OKS Q01 Follow-up

0.04

-0.11—0.19

-0.14—0.21

0.94

0.83—0.99

0.85—0.98

0.66

0.69

0.66

OKS Q02 Baseline – OKS Q02 Follow-up

0.07

-0.19—0.41

-0.22—0.36

0.66

0.36—0.81

0.46—0.82

0.60

0.57

0.59

OKS Q03 Baseline – OKS Q03 Follow-up

0.04

-0.30—0.26

-0.24—0.32

0.71

0.51—0.86

0.45—0.90

0.79

0.82

0.79

OKS Q04 Baseline – OKS Q04 Follow-up

0.07

-0.22—0.41

-0.32—0.47

0.34

-0.05—0.68

-0.05—0.68

0.70

0.67

0.70

OKS Q05 Baseline – OKS Q05 Follow-up

0.11

-0.07—0.33

-0.17—0.39

0.68

0.42—0.88

0.40—0.90

0.42

0.40

0.41

OKS Q06 Baseline – OKS Q06 Follow-up

0.04

-0.19—0.30

-0.20—0.27

0.89

0.77—0.94

0.77—0.95

0.75

0.69

0.78

OKS Q07 Baseline – OKS Q07 Follow-up

0.15

-0.24—0.56

-0.33—0.62

0.65

0.36—0.87

0.35—0.85

0.53

0.54

0.51

OKS Q08 Baseline – OKS Q08 Follow-up

0.11

-0.16—0.37

-0.19—0.41

0.79

0.64—0.89

0.54—0.93

0.45

0.46

0.46

OKS Q09 Baseline – OKS Q09 Follow-up

0.00

-0.22—0.27

-0.31—0.31

0.66

0.41—0.89

0.39—0.89

1.00

1.00

1.00

OKS Q10 Baseline – OKS Q10 Follow-up

-0.07

-0.33—0.26

-0.38—0.24

0.64

0.38—0.82

0.37—0.83

0.63

0.63

0.62

OKS Q11 Baseline – OKS Q11 Follow-up

0.07

-0.17—0.33

-0.24—0.38

0.77

0.56—0.89

0.54—0.91

0.63

0.61

0.64

OKS Q12 Baseline – OKS Q12 Follow-up

0.41

0.07—0.75

0.01—0.81

0.62

0.40—0.81

0.41—0.84

0.05

0.02

0.05

OKS Total Baseline – OKS Total Follow-up

-4.22

-10.70—2.31

-11.80—3.35

-0.91

-0.96—-0.80

-0.97—-0.79

0.26

0.24

0.27