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Table 2 Selected knowledge items and responses (of 12 total items)

From: Measuring decision quality: psychometric evaluation of a new instrument for breast cancer chemotherapy

Question and possible responses (correct response in italics)*

Number with this response, n (%)

 

Patients

Providers

Controls

N

352

 

89

 

35

 

How much would waiting 4 weeks to make a decision about chemotherapy and hormone therapy affect chances of survival?

 A lot

36

(10.2)

0

(0)

6

(17)

 Somewhat

54

(15.3)

5

(6)

14

(40)

 A little or not at all

215

(61.1)

81

(91)

13

(37)

 I am not sure

40

(11.4)

1

(1)

2

(6)

 Missing

7

(2.0)

1

(1)

0

(0)

Without chemotherapy or hormone therapy, about how many women with early stage breast cancer will eventually die of breast cancer?

 More than half

52

(14.8)

5

(6)

14

(40)

 About half

44

(12.5)

7

(8)

7

(20)

 Less than half

105

(29.8)

70

(79)

10

(29)

 I am not sure

144

(40.9)

3

(3)

4

(11)

 Missing

7

(2.0)

4

(4)

0

(0)

Without chemotherapy or hormone therapy, about how many women with early stage breast cancer will be cancer free in ten years?

 More than half

77

(21.9)

48

(54)

4

(11)

 About half

44

(12.5)

15

(17)

3

(9)

 Less than half

76

(21.6)

18

(20)

21

(60)

 I’m not sure

146

(41.5)

4

(4)

7

(20)

 Missing

8

(2.3)

4

(4)

0

(0)

Out of 100 women who have chemotherapy, how many will have a serious side effect, such as another cancer or serious heart problem?

 Fewer than 5

70

(19.9)

59

(66)

5

(14)

 5 to 10

63

(17.9)

15

(17)

12

(34)

 11 to 20

23

(6.5)

4

(4)

7

(20)

 More than 20

18

(5.1)

1

(1)

4

(11)

 I am not sure

166

(47.2)

7

(8)

7

(20)

 Missing

10

(2.8)

3

(3)

0

(0)

If 100 women with early breast cancer did not have chemotherapy or hormone therapy, how many would be cancer free in 10 years? (___ write in number)

 Answer less than 60

139

(39.5)

18

(20)

28

(80)

 Answer within 60–90 range

79

(22.4)

31

(35)

1

(3)

 Answer greater than 90

13

(3.7)

0

(0)

0

(0)

 Not sure

115

(32.7)

15

(17)

6

(17)

 Missing

6

(1.7)

25

(28)

0

(0)

Total knowledge score, mean (SD)

40

(21.0)

71

(17)

29

(16)

  1. *Some questions have been shortened to fit this table.