Table 2.

Factor analysis and reliability of the DS14 scale in a combined cardiac sample (n = 1,404)

Factors	I	II
Negative affectivity items
2. I often make a fuss about unimportant things	0.61	0.10
4. I often feel unhappy	0.74	0.07
5. I am often irritated	0.73	0.04
7. I take a gloomy view of things	0.63	−0.14
9. I am often in a bad mood	0.58	−0.13
12. I often worry about something	0.60	0.02
13. I am often down in the dumps	0.73	−0.12
Cronbach’s alpha	0.85
Mean inter-item correlation	0.45
Social inhibition items
1. I make contact easily when I meet people	0.14	0.72
3. I often talk to strangers	0.16	0.61
6. I often feel inhibited in social interactions	0.29	−0.50
8. I find it hard to start a conversation	0.10	−0.75
10. I am a closed kind of person	0.12	−0.66
11. I would rather keep other people at a distance	0.16	−0.47
14. When socializing I don’t find the right things to talk about	0.15	−0.69
Cronbach’s alpha		0.84
Mean inter-item correlation		0.43

The highest loadings on the corresponding factor, Cronbach’s alpha and mean inter-item correlations are presented in bold