Table 2.
Conditional logistic regression modeling differentiating readmitted patients from controls
| Full model | Final model | Utilization mediation | ||||
|---|---|---|---|---|---|---|
| OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | |
| Complications | ||||||
| Avascular necrosis | 6.49 (1.97–21.3)A | 0.002 | 6.89 (2.23–21.3) | <0.001 | 2.39 (0.957–5.99) | 0.062 |
| Acute chest syndrome | 4.00 (0.918– 17.4) | 0.065 | 5.026 (1.24–20.4) | 0.024 | 2.57 (0.943–7.01) | 0.065 |
| Stroke | 1.45 (0.317– 6.62) | 0.632 | — | — | ||
| Deep vein thrombosis | 1.47 (0.375–5.74) | 0.582 | — | — | ||
| Chronic kidney disease | 0.0649 (0.003– 1.41) | 0.065 | 0.075 (0.004–1.54) | 0.093 | 0.310 (0.046–2.09) | 0.310 |
| Comorbidities | ||||||
| Asthma | 1.67 (0.496– 5.63) | 0.407 | — | — | ||
| Psychiatric history | 3.35 (0.975– 11.5) | 0.055 | 3.25 (0.996–10.6) | 0.051 | 1.79 (0.719–4.44) | 0.211 |
| Substance use disorder | 2.33 (0.684– 7.90) | 0.176 | 2.59 (0.813–8.26) | 0.107 | 1.35 (0.474–3.86) | 0.573 |
| Utilization | ||||||
| Admissions 2010 | 1.94 (1.40–2.68) | <0.001 | ||||
| R2 | 0.233 | 0.226 | 0.336 | |||
Full model was fitted with all studied predictors. The final model was developed after an automated backward stepwise model selection procedure. The mediation by utilization model is the final model with prior year utilization added. R2 figures are adjusted for multiple predictors. CI, confidence interval; OR, odds ratio.
A
Pls delineate between italic and bold values—usually indicate statistical significance, but they both can’t mean that.