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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.