Table 4. Multivariate logistic regression analysis.
| Multivariate logistic regression analysis of the primary outcome after adjusting for all the identified potential confounders found in subset analysis | Multivariate logistic regression analysis of the secondary outcome (all-cause mortality) after adjusting for all the identified potential confounders in subset analysis | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of effects | Odds ratio estimates | Analysis of effects | Odds ratio estimates | ||||||||||
| Effect | DF | Wald χ2 | Pr > χ2 | Point estimate | 95% Wald Confidence Limits | Effect | DF | Wald χ2 | Pr > χ2 | Point estimate | 95% Wald confidence limits | ||
| CCI | 1 | 1.1230 | 0.2893 | 1.313 | 0.793 | 1.953 | Age | 1 | 9.9050 | 0.0016* | 2.883 | 1.491 | 5.574 |
| DM | 1 | 0.5735 | 0.4489 | 1.178 | 0.771 | 1.585 | CCI | 1 | 0.4077 | 0.5231 | 1.161 | 0.734 | 1.839 |
| CKD | 1 | 6.3817 | 0.0115* | 1.934 | 1.159 | 2.709 | Race | 1 | 3.9243 | 0.0476* | 2.086 | 1.008 | 4.316 |
| CAD | 1 | 1.5093 | 0.2192 | 1.356 | 0.834 | 1.878 | CKD | 1 | 2.6618 | 0.1028 | 1.504 | 0.921 | 2.454 |
| CHF | 1 | 6.8798 | 0.0087* | 1.891 | 1.175 | 2.607 | Known dementia | 1 | 3.3409 | 0.0676 | 1.434 | 0.974 | 2.111 |
| CVA | 1 | 1.3361 | 0.2477 | 1.290 | 0.838 | 1.742 | Osteoporosis | 1 | 7.1156 | 0.0076* | 0.425 | 0.226 | 0.797 |
| Frail | 1 | 18.0019 | < 0.0001* | 2.327 | 1.575 | 3.424 | |||||||
| Persistent hyponatremia | 1 | 5.4986 | 0.0190* | 3.524 | 1.230 | 5.818 | |||||||
| ESRD | 1 | 0.3617 | 0.5475 | 1.944 | 0.223 | 3.665 | |||||||
*p < 0.05, significant. CCI = Charlson comorbidity index; DM = diabetes mellitus; DF = degrees of freedom; CHF = congestive heart failure; CKD = chronic kidney disease; CAD = coronary artery disease; CVA = cerebrovascular disease; ESRD = end-stage renal disease.