Table 3.
Association between Health-Related Quality of Life and Hospital admissions. Estimates based on generalized linear models. The outcome risk score (ORS) model includes socio-demographic variables, labs, medical prescriptions, dialysis treatment parameters and comorbidities. We added KDQoL-36 scales to the initial ORS model individually. BKD, burden of kidney disease; SKD, symptoms of kidney disease; EKD, effects of kidney disease; PCS, physical composite score; MCS, mental composite score; KSS, Kidney Disease Scale, a summary score derived from the 24 disease specific items of the KDQoL-36
| Model | ROC-AUC | Coefficient Estimate | Mean QoL Score | SD QoL Score | Odds Ratio (OR)* | p-value Coefficient |
|---|---|---|---|---|---|---|
| ORS | 0.6272 | - | - | - | - | - |
| ORS + BKD | 0.6321 | -0.0047 | 38.2 | 26.3 | 0.9403 | < 0.05 |
| ORS + SKD | 0.6354 | -0.0102 | 73.5 | 17.2 | 0.9162 | < 0.05 |
| ORS + EKD | 0.6298 | -0.0047 | 58.5 | 22.6 | 0.9480 | < 0.05 |
| ORS + PCS | 0.6344 | -0.0207 | 36.4 | 10.7 | 0.8951 | < 0.05 |
| ORS + MCS | 0.6195 | -0.0068 | 44.9 | 11.6 | 0.9611 | n.s. |
| ORS + KSS | 0.6338 | -0.0085 | 57.0 | 18.5 | 0.9243 | < 0.05 |
*OR = exp(SD/2*Coefficient Estimate). ROC-AUC: Area under the ROC curve; SD: standard deviation; ORS: Outcome Risk Score; BKD, burden of kidney disease; SKD, symptoms of kidney disease; EKD, effects of kidney disease; PCS, physical composite score; MCS, mental composite score; KSS, Kidney Disease Scale, summary score derived from the 24 disease specific items of the KDQoL-36