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Table 3 Intraclass correlation coefficients (ICC) for the original instrument MMQL – Youth Form (n = 110)

From: Psychometric evaluation of a Swedish version of Minneapolis-Manchester quality of life-youth form and adolescent form

Item n ICC 95% CI
1. I do as well as my friends in sports 108 0.527 0.38 - 0.65
2. I have a lot of energy 107 0.654 0.53 - 0.75
3. I have a lot of energy for running or sports 105 0.759 0.67 - 0.83
4. I cannot do many activities because of my health 107 0.552 0.41 - 0.67
5. I cannot do many activities because of problems with my arms or legs 107 0.490 0.33 - 0.62
6. In games and sports, I like to watch rather than take part 107 0.567 0.42 - 0.68
7. Sad? 108 0.527 0.38 - 0.65
8. Angry? 108 0.637 0.51 - 0.74
9. Lonely? 108 0.464 0.30 - 0.60
10. Frightened? 107 0.648 0.52 - 0.75
11. Worried about dying? 107 0.710 0.60 - 0.79
12. Worried about your health? 108 0.471 0.31 - 0.61
13. Worried about things in general? 104 0.524 0.37 - 0.65
14. Not as good as most people? 107 0.432 0.27 - 0.57
15. My parents treat me in the same way they treat my brothers and sisters 105 0.571 0.43 - 0.69
16. My parents are usually patient with me 103 0.759 0.66 - 0.83
17. feel different from your friends 106 0.508 0.35 - 0.64
18. Do you have pain or discomfort in your stomach or tummy? 106 0.515 0.36 - 0.64
19.Do you have headahes? 107 0.637 0.51 - 0.74
20. Do your arms and legs ache? 108 0.634 0.51 - 0.73
21. Do you have discomfort in yor chest during active exercise? 106 0.600 0.46 - 0.71
22. Do you get pains that wake you up at night? 107 0.660 0.54 - 0.76
23. Do you have difficulty with your hearing? 108 0.713 0.61 - 0.78
24. Do you have difficulty with your talking (e.g., stuttering/stammer)? 107 0.731 0.63 - 0.81
25. Do you have difficulty seeing clearly (even wearing glasses)? 107 0.481 0.32 - 0.61
26. Do you have difficulty falling asleep? 108 0.686 0.57 - 0.78
27. I am looking forward to the future 108 0.630 0.50 - 0.73
28. I am happy the way things are 109 0.557 0.41 - 0.67
29. I am happy with the state of my health 108 0.648 0.52 - 0.75
30. I am happy with my life in general 109 0.781 0.70 - 0.85
31. I am a healthy person 109 0.775 0.69 - 0.84
32. I expect to live a long life. I expect to grow old 108 0.584 0.44 - 0.70