Numerical values of each variable in the loadings plot
Variable | Description※ | PC1 | PC2 | PC3 |
---|---|---|---|---|
V1 | Anxiety | 0.825 | 0.169 | –0.500 |
V2 | Depression | 0.747 | 0.549 | –0.212 |
V3 | Stress | 0.940 | 0.213 | –0.184 |
V4 | Subjective quality of sleep | 0.847 | –0.193 | 0.307 |
V5 | Sleep duration | 0.878 | –0.00237 | –0.254 |
V6 | Sleepiness and daytime dysfunction | 0.861 | 0.107 | –0.134 |
V7 | Sleep latency | 0.794 | –0.508 | 0.214 |
V8 | Sleep disorders and daytime dysfunction | 0.760 | 0.449 | 0.397 |
V9 | Use of hypnotics | 0.844 | –0.388 | 0.252 |
V10 | Sleep efficiency | 0.734 | –0.616 | 0.0716 |
V11 | Salivary cortisol | 0.191 | 0.864 | 0.446 |
※ Detailed explanations of each variable can be found in the original paper [1]. PC: principal component