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Table 2 Exploratory factor analysis of the final DVTQOL

From: An instrument for measuring health-related quality of life in patients with Deep Venous Thrombosis (DVT): development and validation of Deep Venous Thrombosis Quality of Life (DVTQOL) questionnaire

  Factors
Items 1 2 3 4 5 6
Emotional distress       
1. Feel weak or feeble 0.66* 0.15 0.15 0.11 0.38 0.02
2. Feel anxious about your health 0.68* 0.25 0.31 0.22 -0.02 0.35
3. Feel tired 0.62* 0.14 0.18 0.12 0.34 0.07
4. Unable to live as you'd like 0.81* 0.15 0.26 0.13 -0.01 0.21
5. Feel anxious about the future 0.80* 0.08 0.24 0.06 -0.06 0.26
6. Feel irritated 0.71* 0.26 -0.04 0.05 0.18 -0.12
7. Feel frustrated and impatient 0.82* 0.12 0.22 0.15 0.18 0.10
Symptoms       
8. Pain in the leg 0.19 0.64* 0.35 0.04 0.22 0.03
9. Swollen ankles 0.18 0.65* 0.13 -0.07 0.12 -0.03
10. 'Sense of fatigue' in the leg 0.32 0.74* 0.23 0.14 0.15 0.07
11. Cramp in the leg -0.04 0.62* 0.02 0.04 0.10 -0.03
12. Tension in the muscles 0.21 0.66* 0.17 -0.04 -0.01 0.12
13. Numbness, crawling or pricking sensation 0.10 0.72* 0.33 0.09 -0.06 0.13
14. Bruising on the leg -0.06 0.54* -0.23 0.18 0.39 0.04
15. 'Feeling of heaviness' in the leg 0.35 0.66* 0.22 0.03 0.27 -0.01
Limitation in physical activity       
16. Stumbling, falling or cutting yourself 0.42 0.07 0.50* 0.04 0.22 0.12
17. Go for long walks 0.23 0.33 0.79* 0.12 0.15 -0.03
18. Stand still for long periods 0.22 0.26 0.64* 0.08 0.11 0.13
19. Refrain from physical activities 0.10 0.14 0.83* 0.14 0.15 0.03
20. Discomfort when walking up stairs 0.39 0.26 0.64* -0.02 0.15 -0.08
Hassle with monitoring       
21. Irritation due to monitoring 0.13 0.06 0.09 0.89* -0.00 0.09
22. Inconvenience due to monitoring 0.17 0.09 0.10 0.92* 0.02 0.05
23. Refrain from doing things due to monitoring 0.14 0.00 0.08 0.94* -0.04 0.05
Sleep disturbance       
24. Trouble getting to sleep 0.12 0.32 0.18 -0.08 0.78* 0.03
25. Wake up during the night 0.39 0.22 0.16 -0.06 0.75* 0.01
26. Not sleeping properly 0.15 0.07 0.23 0.03 0.78* 0.10
Dietary problems       
27. Awareness of food and drink 0.04 0.05 0.04 0.07 0.12 0.76*
28. Avoid certain food or drink 0.11 0.06 -0.03 0.12 -0.02 0.84*
29. Ought to eat and drink 0.21 0.01 0.08 -0.03 0.03 0.89*
Explained variance 4.85 4.09 3.29 2.79 2.58 2.43
Proportion of explained variance % 16.5 14.0 11.2 9.5 8.8 8.3