Table 2.
Cox proportional hazard model of factors associated with hospitalizations for a bacterial respiratory tract infection after tracheotomy.
| Unadjusted Hazard Ratio (95% CL) |
p-value | Adjusted Hazard Ratio (95% CL) | p-value | |
|---|---|---|---|---|
| Gender | ||||
| Female | 0.98 (0.91–1.05) | 0.56 | 0.99 (0.92–1.07) | 0.85 |
| Male | REF | REF | ||
| Admission Age | ||||
| < 30 days | 1.11 (0.95–1.30) | 0.20 | 1.32 (1.11–1.58) | 0.002 |
| 30 days to 12 months | 1.24 (1.06–1.44) | 0.006 | 1.45 (1.24–1.71) | <0.001 |
| 1 to 4 years | 1.30 (1.11–A1.53) | 0.001 | 1.34 (1.14–1.58) | <0.001 |
| 5 to 12 years | 1.02 (0.85–1.22) | 0.82 | 1.02 (0.85–1.23) | 0.81 |
| 13 to 17 years | REF | REF | ||
| Race/Ethnicity | ||||
| Non-Hispanic White | REF | REF | ||
| Non-Hispanic Black | 1.13 (1.03–1.24) | 0.01 | 1.11 (1–1.23) | 0.06 |
| Hispanic | 1.52 (1.38–1.67) | < 0.001 | 1.34 (1.2–1.5) | < 0.001 |
| Other | 1.02 (0.91–1.15) | 0.70 | 1.02 (0.9–1.15) | 0.81 |
| Payer | ||||
| Private | REF | REF | ||
| Government | 1.41 (1.30–1.54) | < 0.001 | 1.21 (1.1–1.33) | < 0.001 |
| Other Payer | 1.15 (0.99–1.34) | 0.07 | 0.99 (0.84–1.17) | 0.93 |
| Discharge Status | ||||
| Home | 1.04 (0.95–1.13) | 0.42 | 1.19 (1.08–1.32) | 0.001 |
| Post-acute care facility | REF | REF | ||
| Discharge Season | ||||
| January–March | REF | REF | ||
| April–June | 0.97 (0.88–1.08) | 0.59 | 0.98 (0.88–1.08) | 0.62 |
| July–September | 0.97 (0.88–1.08) | 0.62 | 1.02 (0.91–1.13) | 0.78 |
| October–December | 1 (0.90–1.11) | 1 | 1.01 (0.91–1.11) | 0.93 |
| # Complex Chronic Conditions | ||||
| 0 | REF | REF | ||
| 1 | 1.43 (0.96–2.12) | 0.08 | 1.48 (1–2.2) | 0.05 |
| 2 | 1.96 (1.35–2.85) | < 0.001 | 1.87 (1.28–2.73) | 0.001 |
| 3 or more | 2.16 (1.49–3.11) | < 0.001 | 1.96 (1.34–2.86) | < 0.001 |
| Risk Adjustment for Congenital Heart Surgery Score | ||||
| No Cardiac Surgery | REF | REF | ||
| RACHS Score unassigned | 0.95 (0.79–1.15) | 0.63 | 0.94 (0.77–1.15) | 0.56 |
| Lower risk (1 through 3) | 0.87 (0.73–1.04) | 0.12 | 0.84 (0.7–1) | 0.05 |
| Higher risk (4 through 6) | 0.96 (0.74–1.24) | 0.74 | 1 (0.76–1.31) | 0.99 |
| Underlying Medical Conditions | ||||
| History of Prematurity | 0.90 (0.82–0.99) | 0.03 | 0.99 (0.89–1.11) | 0.91 |
| Upper Airway Obstruction | 1.04 (0.96–1.12) | 0.37 | 1.01 (0.93–1.1) | 0.76 |
| Chronic Lung Disease | 0.99 (0.92–1.06) | 0.71 | 0.95 (0.87–1.03) | 0.19 |
| Neurologic | 1.39 (1.29–1.49) | < 0.001 | 1.29 (1.19–1.4) | < 0.001 |
| Trauma | 0.86 (0.73–1.02) | 0.09 | 0.83 (0.69–1) | 0.04 |
| Gastrostomy tube Diagnosis Code | 1.23 (1.14–1.33) | < 0.001 | 1.15 (1.05–1.26) | 0.002 |
| Gastrostomy tube Procedure Code | 1.04 (0.96–1.11) | 0.34 | 1.04 (0.95–1.13) | 0.39 |
| Ventilator dependency | 0.99 (0.91–1.07) | 0.72 | 0.88 (0.81–0.97) | 0.01 |