Table 2.
Items, Answer Key, Correct and Incorrect Responses, Discrimination Index, and Item-to-Total Correlations on DKQ-R (N = 258)
| DKQ-R Item | Answer Key | Correct Responses, % | Incorrect Responses, % | Discrimination Index | Item-to-Total Correlation* |
|---|---|---|---|---|---|
| The body needs insulin to use the sugar that a person eats. | Yes | 77.9 | 22.1 | 0.37 | 0.37 |
| When someone has diabetes, their children are more likely to get diabetes. | Yes | 76.0 | 24.0 | 0.34 | 0.34 |
| A fasting blood glucose level of 100 is too low. | No | 88.8 | 11.2 | 0.31 | 0.50 |
| People with high glucose have problems with blood circulation in their legs. | Yes | 89.9 | 10.1 | 0.31 | 0.43 |
| People with high glucose can have damage to the kidneys. | Yes | 94.2 | 5.9 | 0.21 | 0.51 |
| Shaking and sweating are signs of high blood glucose. | No | 40.7 | 59.3 | 0.59 | 0.41 |
| It is safe for people with diabetes to wear flip flops. | No | 57.8 | 42.3 | 0.47 | 0.40 |
| Vaccines are highly recommended for people with diabetes. | Yes | 74.8 | 25.2 | 0.43 | 0.40 |
| People with diabetes should see the dentist twice a year. | Yes | 75.6 | 24.5 | 0.40 | 0.36 |
| Frequent urination and thirst are signs of low blood glucose. | No | 62.8 | 37.2 | 0.67 | 0.56 |
| A person with diabetes can eat as much as they want if it is sugar-free. | No | 86.8 | 13.2 | 0.16 | 0.27 |
| A1C measures a 3-month average of blood glucose levels. | Yes | 82.2 | 17.9 | 0.36 | 0.46 |
| After eating lunch, a glucose level of 200 is too low. | No | 88.0 | 12.0 | 0.31 | 0.49 |
| Stress lowers blood glucose levels. | No | 81.0 | 19.0 | 0.39 | 0.50 |
| Smoking will raise the chances of diabetes complications. | Yes | 81.0 | 19.0 | 0.43 | 0.49 |
| People with diabetes should increase the amount of trans-fat in their diets. | No | 69.4 | 30.6 | 0.49 | 0.44 |
| An A1C of 120 is good | No | 53.5 | 46.5 | 0.59 | 0.44 |
| Someone with diabetes is more likely to get heart disease. | Yes | 88.8 | 11.3 | 0.30 | 0.46 |
| Feeling angry can raise blood glucose levels. | Yes | 65.9 | 34.1 | 0.47 | 0.41 |
| Cooking with lard is healthier than cooking with vegetable oil. | No | 81.0 | 19.0 | 0.31 | 0.39 |
| People with diabetes should have their eyes checked every year. | Yes | 95.0 | 5.1 | 0.13 | 0.36 |
| White bread has more fiber than whole-wheat bread. | No | 90.7 | 9.3 | 0.23 | 0.36 |
*
Each item was significantly correlated to the total DKQ-R (P <0.001).