| Items | Factor 1 (α = 0.911) | Factor loadings |
| 13 | How often do you feel that no one knows you well? | 0.725 |
| 3 | How often do you feel there is no one you can turn to? | 0.711 |
| *10 | How often do you feel close to people? | 0.707 |
| 2 | How often do you feel that you lack companionship? | 0.695 |
| *19 | How often do you feel that there are people you can talk to? | 0.688 |
| 14 | How often do you feel isolated from others? | 0.667 |
| 4 | How often do you feel alone? | 0.652 |
| 7 | How often do you feel you are no longer close to anyone? | 0.643 |
| *16 | How often do you feel that there are people who understand you? | 0.623 |
| 15 | How often do you feel you can find companionship when you want it? | 0.599 |
| *20 | How often do you feel that there are people you can turn to? | 0.576 |
| *1 | How often do you feel that you are “in tune” with the people around you? | 0.551 |
| 11 | How often do you feel left out? | 0.534 |
| 12 | How often do you feel that your relationships with others are not meaningful? | 0.522 |
| 18 | How often do you feel people around you but not with you? | 0.499 |