Table 3 Descriptive statistics for all potential outcome measures at all timepoints

Language Screener (baseline)

102

10.85

4.06

11.0

1–19

10.06, 11.64

52

10.48

3.96

10

2–18

9.40, 11.56

50

11.24

4.18

11.5

1–19

10.08, 12.40

CDI Understanding

 Baseline

101

46.41

27.66

53.0

0–100

41.01, 51.80

52

44.40

27.71

49

0–100

36.87 51.94

49

48.53

27.74

55.0

0–86

40.76, 56.30

 Pre-test

78

57.69

23.47

63.0

0–100

52.48, 62.90

33

51.85

26.58

54

0–91

42.78 60.92

45

61.98

20.14

66.0

18–100

56.09, 67.86

 Post-test

71

67.99

19.43

72.0

0–98

63.47, 72.50

34

68.50

19.20

72

0–96

62.05 74.95

37

67.51

19.89

73.0

17–98

61.11, 73.92

 Follow-up

65

78.66

15.86

81.0

28–99

74.81, 82.52

30

80.90

15.47

84

28–99

75.36 86.44

35

76.74

16.15

78.0

38–99

71.39, 82.09

CDI Speaking

 Baseline

102

21.76

20.92

14.5

0–79

17.70, 25.83

52

19.71

21.23

11.5

0–79

13.9425.48

50

23.90

20.59

21.0

0–72

18.19, 29.61

 Pre-test

78

26.78

22.70

18.5

0–82

21.74, 31.82

33

24.67

23.65

16

0–82

16.6032.74

45

28.33

22.12

25.0

1–74

21.87, 34.80

 Post-test

71

38.51

25.70

40.0

0–96

32.53, 44.48

34

41.97

28.98

41

0–96

32.23 51.71

37

35.32

22.19

35.0

1–73

28.18, 42.47

 Follow-up

65

58.89

28.61

64.0

0–99

51.94, 65.85

30

59.67

29.54

63.5

0–99

49.1070.24

35

58.23

28.20

67.0

2–96

48.89, 67.57

WellComm

 Pre-test

70

2.14

0.8

2.00

1–4

1.95, 2.33

27

2.19

0.88

2.00

1–4

1.85, 2.52

42

2.12

0.76

2.00

1–4

1.89, 2.34

 Post-test

59

2.47

0.75

3.00

1–4

2.28, 2.67

23

2.61

0.78

3.00

1–4

2.29, 2.93

36

2.39

0.73

2.00

1–4

2.15, 2.63

 Follow-up

63

3.19

1.03

3.00

1–5

2.94, 3.44

29

3.31

1.00

3.00

1–5

2.95, 3.68

34

3.09

1.06

3.00

1–5

2.73, 3.44

HLE Score

 Pre-test

83

29.60

10.55

31.0

1–49

27.33, 31.87

38

28.68

10.74

29.5

8–49

25.2732.10

45

30.38

10.45

32.0

1–49

27.32, 33.43

 Post-test

71

31.04

10.28

31.0

9–54

28.65, 33.43

34

31.56

10.44

31

13–46

28.05, 35.07

37

30.57

10.26

30.0

9–54

27.26, 33.87

 Follow-up

65

32.17

9.86

34.0

12–52

29.77, 34.57

30

34.13

8.80

36

12–49

30.99 37.28

35

30.49

10.53

31.0

12–52

27.00, 33.97

MORS Warmth

 Pre-test

83

28.96

4.69

29.0

15–35

27.96, 29.97

38

28.84

4.47

29

17–35

27.42 30.26

45

29.07

4.91

30.0

15–35

27.63, 30.50

 Post-test

70

30.26

4.44

31.5

13–35

29.22, 31.30

34

31.00

4.27

32

13–35

29.56 32.44

36

29.56

4.54

30.0

20–35

28.07, 31.04

 Follow-up

65

30.68

4.00

32.0

18–35

29.70, 31.65

30

32.10

2.82

32.5

26–35

31.09 33.11

35

29.46

4.47

31.0

18–35

27.97, 30.94

MORS Invasive

 Pre-test

83

11.04

6.19

10.0

1–32

9.71, 12.37

38

10.74

4.97

10.5

2–20

9.16, 12.32

45

11.29

7.10

10.0

1–32

9.21, 13.36

 Post-test

70

9.97

5.41

10.0

0–24

8.70, 11.24

34

9.88

5.14

9.5

3–20

8.15, 11.61

36

10.06

5.72

10.0

0–24

8.19, 11.92

 Follow-up

65

10.65

5.54

10.0

1–24

9.30, 11.99

30

9.33

4.14

9

1–21

7.85, 10.81

35

11.77

6.36

10.0

2–24

9.67, 13.88

SDQ score

 Pre-test

82

8.13

4.07

8.0

1–18

7.25, 9.01

38

8.05

3.36

8

2–15

6.98, 9.12

44

8.20

4.63

8.0

1–18

6.84, 9.57

 Post-test

71

7.23

4.36

7.0

0–20

6.21, 8.24

34

6.26

3.53

6

0–15

5.08, 7.45

37

8.11

4.89

8.0

1–20

6.53, 9.68

 Follow-up

65

7.22

4.09

7.0

1–20

6.22, 8.21

30

5.90

2.88

6

1–11

4.87, 6.93

35

8.34

4.65

7.0

1–20

6.80, 9.88