Appendix Table 4.
Area under receiver operating characteristic curves (AUCs) for 30-day mortality and 30-day re-hospitalization in sensitivity analyses
| Sensitivity analyses | Predictors | Mortality: AUCs (95% CI) | Re-hospitalization: AUCs (95% CI) | ||
|---|---|---|---|---|---|
| Development Cohort | Validation Cohort | Development Cohort | Validation Cohort | ||
| Original study population | All predictors* associated with the outcomes and increased AUC | 0.729 (0.721–0.738) |
0.727 (0.715–0.739) |
0.650 (0.644–0.655) |
0.642 (0.634–0.650) |
| Completed cases without missing data | Predictors in final models | 0.702 (0.692–0.711) |
0.702
(0.689–0.715) |
0.623 (0.617–0.629) |
0.621 (0.612–0.629) |
| Patients aged ≥ 65 years | Predictors in final models | 0.704 (0.695–0.712) |
0.707 (0.694–0.719) |
0.625 (0.620–0.631) |
0.623 (0.615–0.632) |
| Men | Predictors in final models except gender | 0.711 (0.699–0.724) |
0.686 (0.667–0.704) |
0.619 (0.611–0.628) |
0.620 (0.607–0.632) |
| Women | Predictors in final models except gender | 0.693 (0.681–0.706) |
0.713 (0.696–0.730) |
0.629 (0.622–0.637) |
0.627 (0.616–0.638) |
| Patients survived 30 days after SNF admission | Predictors in final models | NA | NA | 0.627 (0.621–0.634) |
0.623 (0.615–0.632) |
For 30-day all-cause mortality, in addition to the predictors in the final model, the newly added predictors included type of heart failure, hypertension, coronary artery disease, atrial fibrillation, hyperlipidemia, diabetes, anemia, chronic kidney disease, depression, pneumonia, number of hospitalizations for heart failure and number of any hospitalizations in the 6 months before the index hospitalization, fall history in the month before the index SNF admission, pain, individual activity for eating, dressing, using the toilet, bathing, getting in and out of bed, and locomotion on unit, separately, as well as the facility-level factors (5-star nursing staffing rating, certified bed size, and geographic location); The Hosmer and Lemeshow test p = 0.56 in the development cohort.
For 30-day all-cause re-hospitalization, in addition to the predictors in the final model, the newly added predictors included type of heart failure, hypertension, coronary artery disease, atrial fibrillation, hyperlipidemia, diabetes, COPD/asthma, anemia, chronic kidney disease, dementia, depression, pneumonia, number of hospitalizations for heart failure and for other heart disease in the 6 months before the index hospitalization, separately, use of intensive unit care during the index hospitalization, BMI, dyspnea, urinary incontinence, fall history in the month before the index SNF admission, pressure ulcer, individual activity for eating, dressing, using the toilet, bathing, getting in and out of bed, and locomotion on unit, separately, as well as the facility-level factors (5-star nursing staffing rating, certified bed size, chain membership, profit orientation, geographic location, hours per resident per day of total nursing care, and hours per resident per day of licensed nursing care); The Hosmer and Lemeshow test p = 0.11 in the development cohort