Table 3 Psychometric Properties of the OKAT by Item
Item Number | Item Discrimination (%) | Item-total correlation | P value | Factor Loading |
|---|---|---|---|---|
1. Osteoporosis leads to an increased risk of bone fractures. | 12.42 | 0,7 | < 0.001 | 0.61 |
2. Osteoporosis usually causes symptoms (e.g. pain) before fractures occur. | 58.33 | 0.85 | < 0.001 | 0.47 |
3. Having a higher peak bone mass at the end of childhood gives no protection against the development of osteoporosis in later life. | 78.42 | 1.00 | < 0.001 | 0.45 |
4. Osteoporosis is more common in men. | 46.35 | 0.94 | < 0.001 | 0.56 |
5. Cigarette smoking can contribute to osteoporosis. | 44.95 | 0.83 | < 0.001 | 0.43 |
6. White women are at highest risk of fracture as compared to other races. | 66.67 | 1.00 | < 0.001 | 0.43 |
7. A fall is just as important as low bone strength in causing fractures. | 34.71 | 1.00 | < 0.001 | 0.72 |
8. By age 80, the majority of women have osteoporosis. | 51.61 | 0.84 | < 0.001 | 0.47 |
9. From age 50, most women can expect at least one fracture before they die. | 45.05 | 0.89 | < 0.001 | 0.52 |
10. Any type of physical activity is beneficial for osteoporosis. | 62.38 | 0.95 | < 0.001 | 0.48 |
11. It is easy to tell whether I am at risk of osteoporosis by my clinical risk factors. | 41.76 | 0.89 | < 0.001 | 0.48 |
12. Family history of osteoporosis strongly predisposes a person to osteoporosis. | 41.47 | 0.91 | < 0.001 | 0.45 |
13. An adequate calcium intake can be achieved from two glasses of milk a day. | 53.69 | 0.85 | < 0.001 | 0.66 |
14. Sardines and broccoli are good sources of calcium for people who cannot take dairy products. | 58.99 | 0.74 | < 0.001 | 0.39 |
15. Calcium supplements alone can prevent bone loss. | 50.54 | 1.00 | < 0.001 | 0.38 |
16. Alcohol in moderation has little effect on osteoporosis. | 39.04 | 0.87 | < 0.001 | 0.71 |
17. A high salt intake is a risk factor for osteoporosis. | 42.22 | 1.00 | < 0.001 | 0.56 |
18. There is a small amount of bone loss in the ten years following the onset of menopause. | 47.65 | 1.00 | < 0.001 | 0.42 |
19. Hormone therapy prevents further bone loss at any age after menopause. | 70.12 | 0.95 | < 0.001 | 0.49 |
20. There are no effective treatments for osteoporosis available in “Hungary”a. | 62.33 | 0.95 | < 0.001 | 0.45 |