Table 4 Intraclass correlation coefficients (ICC) for the original instrument MMQL – adolescent form (n = 120)

1. I have a lot of energy

119

0.477

0.33 - 0.61

2. I need time out to rest during the day

118

0.532

0.39 - 0.65

3. I have a lot of energy for running or sports

118

0.611

0.49 - 0.71

4. I cannot do many activities because of my arms or legs

118

0.346

0.18 - 0.50

5. I cannot do many activities because of my health

119

0.505

0.36 - 0.63

6. In games and sports, I like to watch rather than take part

119

0.529

0.39 - 0.65

7. Sad

119

0.698

0.59 - 0.78

8. Angry

119

0.587

0.46 - 0.69

9. Tired during the day

119

0.571

0.44 - 0.68

10. Lonely

118

0.686

0.58 - 0.77

11. Frightened

119

0.429

0.27 - 0.57

12. Anxious or nervous

117

0.433

0.27 - 0.57

13. Strong and healthy

117

0.370

0.20 - 0.52

14. Worried about dying

119

0.637

0.52 - 0.73

15. Worried about my health

118

0.396

0.23 - 0.54

16. Worried about things in general

115

0.331

0.16 - 0.48

17. Not as good as most people (inferior to them)

119

0.361

0.20 - 0.51

18. How satisfied are you with your weight?

118

0.447

0.29 - 0.58

19. How happy are you with the way you look?

115

0.571

0.43 - 0.68

20. How do you feel about your body development right now?

114

0.248

0.68 - 0.41

21. I like my body the way it is

118

0.590

0.46 - 0.70

22. When others look at me they think that I am poorly developed

116

0.620

0.49 - 0.72

23. I am uncomfortable with the way my body is developing

118

0.385

0.22 - 0.53

24. I find it difficult to make friends

118

0.529

0.39 - 0.65

25. I feel left out in groups of people my own age

117

0.549

0.41 - 0.67

26. People like to be with me

116

0.538

0.39 - 0.66

27. I have a lot in common with my friends

117

0.475

0.32 - 0.60

28. I get along well with people own age

118

0.374

0.21 - 0.52

29. I have many close friends

117

0.581

0.45 - 0.70

30. I have similar hobbies and interests to those of people my own age

118

0.648

0.53 - 0.74

31. Being togheter with other people gives me a good feeling

118

0.357

0.19 - 0.51

32. Do you have difficulty concentrating at school?

118

0.544

0.40 - 0.66

33. Do you have difficulty concentrating at other times (e.g., playing cards, computer games or reading)

118

0.566

0.43 - 0.68

34. How often is homework or study hard for you?

116

0.638

0.52 - 0.73

35. How often do you need more help with school work than others in your class?

118

0.437

0.28 - 0.57

36. How much difficulty do you have remembering things at school/college or work?

117

0.550

0.41 - 0.66

37. How much difficulty do you have concentrating at work or school?

117

0.624

0.50 - 0.72

38. How much difficulty do you have with reading and writing?

117

0.582

0.45 - 0.69

39. How much difficulty do you have with math and calculation?

116

0.562

0.42 - 0.68

40. How much difficulty do you have with your school work, compared to others in your class?

116

0.591

0.46 - 0.70

41. I find it easy ti have an intimate relationship

116

0.612

0.48 - 0.71

42. I am confident when I am with people of the opposite sex

115

0.763

0.67 - 0.83

43. I am happy with the way things are

117

0.519

0.37 - 0.64

44. I am happy with life in general

116

0.589

0.46 - 0.70

45. In general, I am satisfied with my current life situation

117

0.516

0.37 - 0.64