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Table 1 Exploratory factor analysis of the MED-QoL

From: Simvastatin improves the sexual health-related quality of life in men aged 40 years and over with erectile dysfunction: additional data from the erectile dysfunction and statin trial

Factor

Item*

Factor 1

Factor 2

Factor 3

Cumulative variance

Alpha

Eigenvalue

1 (Control)

1. I feel sexually frustrated because of my erection difficulties

0.638*

0.100

0.302

0.37

0.82

11.40

 

2. My problem makes me feel depressed

0.515*

0.119

0.443

   
 

3. I feel less of a man because of my problem

0.576*

0.296

0.448

   
 

4. I’ve lost confidence in my sexual ability

0.676*

0.349

0.211

   
 

5. I worry that I won’t be able to get or keep up an erection

0.644*

0.294

0.302

   
 

7. I feel that I have lost control over my erections

0.681*

0.230

0.163

   
 

10. I worry about the future of my sex life

0.512*

0.417

0.327

   
 

12. I’m embarrassed about my problem

0.532*

0.236

0.480

   
 

16. I get less pleasure from life because of my erection problem

0.502*

0.401

0.230

   

2 (Intimacy)

11. I’ve lost pleasure in sex

0.454

0.569*

0.070

0.69

0.85

1.54

 

17. I feel guilty about my erection problem

0.219

0.521*

0.478

   
 

18. I am afraid to “make the first move” with my partner

0.316

0.665*

0.127

   
 

19. I worry that my partner blames herself for my problem

0.062

0.540*

0.305

   
 

20. I worry that I’m letting my partner down

0.439

0.547*

0.427

   
 

21. I worry that I am not satisfying my partner sexually

0.506

0.521*

0.217

   
 

22. I worry that we are going apart because of my problem

0.257

0.605*

0.265

   
 

25. I worry that she thinks I don’t want her because of my problem

0.194

0.690*

0.300

   

3 (Emotion)

6. My erection problem is always on my mind

0.459

0.302

0.506*

0.96

0.86

1.02

 

8. I blame myself for my problem

0.205

0.381

0.566*

   
 

9. I feel angry because of my problem

0.313

0.168

0.676*

   
 

13. I worry about being humiliated because of my problem

0.263

0.288

0.626*

   

Excluded

14. I try to avoid having sex

NA

NA

NA

   
 

15. I feel different from other men because of my erection problem

NA

NA

NA

   
 

23. I worry that she is looking for someone else because of my problem

NA

NA

NA

   
 

24. I feel that she blames me for my erection problem

NA

NA

NA

   
 

26. I have trouble talking to her about my problem

NA

NA

NA

   
 

27. My erection problem interferes with my daily activities

NA

NA

NA

   

Scale total

    

.96

.95

 
  1. MED-QoL-R: male erectile dysfunction-specific quality of life revised scale. *Item numbers are based on the original MED-QoL scale. Factor analysis with varimax rotation, excluding items 14, 15, 23, 24,26 and 27.
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BMC Urology

ISSN: 1471-2490

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