Table 5 Mean risk perception (s.d.), percentage under- (−), accurate (=), and overestimates (+) by intervention group

From: Randomised trial of a decision aid and its timing for women being tested for a BRCA1/2 mutation

  

T2

T3

 

Group

Mean (s.d.)

−(%)

=(%)

+(%)

Group

Mean (s.d.)

−(%)

=(%)

+(%)

General

 bc risk

DA

25.3 (17.4)

2

41

57

DA_b

20.4 (18.6)

9

56

35

 

C

27.0 (19.8)

3

38

59

DA_a

21.0 (18.8)

5

59

36

 oc risk

DA

20.3 (17.9)

1

11

88

DA_b

16.4 (21.0)

2

24

74

 

C

21.1 (18.4)

2

7

91

DA_a

11.9 (12.8)

0

21

79

BRCA1/2

 bc risk

DA

65.2 (17.4)

40

57

3

DA_b

70.6 (14.7)

28

68

4

 

C

62.8 (19.2)

43

53

4

DA_a

69.5 (15.3)

27

70

3

 oc risk*

DA

55.6 (18.9)

3

65

32

DA_b

52.6 (17.7)

2

73

24

 

C

55.5 (21.7)

7

54

39

DA_a

48.7 (20.5)

5

72

23

 Cure bc*

DA

60.4 (21.3)

49

43

8

DA_b

61.9 (24.2)

39

50

11

 

C

56.2 (12.4)

59

32

9

DA_a

68.0 (17.1)

34

58

8

 Cure oc*

DA

44.7 (22.0)

33

38

37

DA_b

37.9 (26.7)

48

24

28

 

C

45.3 (26.9)

39

24

29

DA_a

40.4 (22.4)

32

47

21

 bc risk after PM

DA

10.3 (15.0)

37

43

20

DA_b

8.1 (9.3)

41

41

18

 

C

15.8 (20.8)

30

38

32

DA_a

8.7 (9.4)

38

42

20

 oc risk after PO

DA

8.7 (14.4)

50

32

18

DA_b

6.3 (9.3)

48

39

13

 

C

13.0 (20.5)

41

32

27

DA_a

6.7 (6.8)

45

38

17

  1. C: control; bc: breast cancer; oc: ovarian cancer; PM: prophylactic mastectomy; PO: prophylactic oophorectomy.
  2. *P<0.05 for risk accuracy comparing the DA and control groups.
  3. P<0.05 for risk accuracy comparing the DA_b and DA_a groups.