Table 5.
ROC parameters for predicting quality of life using individual or combined factors
| Predictor variable | AUC | 95% CI | Cut-off value | Sensitivity | Specificity | Youden index |
|---|---|---|---|---|---|---|
| Joint prediction | 0.851 | 0.788-0.915 | 0.70363 | 66.23% | 92.42% | 58.66% |
| Care intervention scheme | 0.617 | 0.537-0.697 | 0.5 | 68.83% | 54.55% | 23.38% |
| Age | 0.65 | 0.571-0.729 | 0.5 | 64.94% | 65.15% | 30.09% |
| Marital status | 0.63 | 0.566-0.694 | 0.5 | 35.07% | 90.91% | 25.97% |
| Per capita monthly household income | 0.635 | 0.561-0.709 | 0.5 | 46.75% | 80.30% | 27.06% |
| SAS after intervention | 0.645 | 0.554-0.737 | 30.5 | 77.92% | 48.49% | 26.41% |
| PSQI after intervention | 0.68 | 0.593-0.767 | 7.5 | 58.44% | 72.73% | 31.17% |
Notes: AUC: area under the curve; SAS: Self-rating anxiety scale; PSQI: Pittsburgh sleep quality index; ROC: receiver operating characteristic.