TABLE 3.
Multilevel Multinomial Logistic Regression Models of Readmission with Hospital-Level Random Intercepts: Selected Variables of Interest
| Predictors | Non-COPD ref = Not Readmitted)
|
COPD (ref = Not Readmitted)
|
||
|---|---|---|---|---|
| OR | 95% CI | OR | 95% CI | |
| Elixhauser Index (per ½ SD) | *1.19 | (1.19, 1.19) | *1.04 | (1.04, 1.05) |
|
| ||||
| Sex (ref = male) | ||||
| Female | *0.92 | (0.91, 0.93) | *0.91 | (0.90, 0.93) |
| Age (per 10 years) | *1.06 | (1.05, 1.07) | *0.89 | (0.89, 0.90) |
|
| ||||
| Income Quartile (ref = 1st) | ||||
| 2nd Quartile | 0.99 | (0.98, 1.01) | *0.97 | (0.95, 0.98) |
| 3rd Quartile | 0.99 | (0.97, 1.00) | *0.95 | (0.93, 0.97) |
| 4th Quartile | 0.98 | (0.96, 1.00) | *0.91 | (0.89, 0.94) |
| Missing | *0.95 | (0.90, 1.00) | 0.99 | (0.94, 1.05) |
|
| ||||
| Payer (ref=Medicare) | ||||
| Medicaid | *1.03 | (1.01, 1.06) | *1.10 | (1.07, 1.12) |
| Private | *0.76 | (0.74, 0.78) | *0.65 | (0.63, 0.67) |
| Self-Pay | *0.62 | (0.59, 0.65) | *0.62 | (0.59, 0.65) |
| Other/No Charge | *0.77 | (0.74, 0.80) | *0.81 | (0.78, 0.85) |
|
| ||||
| Disposition (ref=Routine to home) | ||||
| Postacute care | *1.35 | (1.33, 1.38) | 1.00 | (0.98, 1.03) |
| Home Health | *1.31 | (1.29, 1.34) | *1.30 | (1.27, 1.32) |
| Other | *1.19 | (1.11, 1.28) | 0.92 | (0.83, 1.01) |
| Length of Stay (per day) | *1.02 | (1.01, 1.02) | *1.01 | (1.00, 1.01) |
|
| ||||
| Care intensity (ref = No) | ||||
| Noninvasive ventilation | *0.89 | (0.87, 0.91) | *1.37 | (1.34, 1.40) |
| Mechanical ventilation | *0.79 | (0.76, 0.81) | *0.87 | (0.84, 0.91) |
| Tracheostomy | 1.07 | (1.00, 1.14) | 1.01 | (0.92, 1.10) |
| Cardiac arrest | *0.87 | (0.77, 0.98) | *0.68 | (0.58, 0.81) |
| CPR | 1.15 | (0.98, 1.34) | 0.98 | (0.80, 1.21) |
|
| ||||
| Hospital ownership (ref = government) | ||||
| Private, nonprofit | *0.97 | (0.95, 0.99) | 0.99 | (0.97, 1.01) |
| Private, for-profit | *1.05 | (1.03, 1.08) | 1.01 | (0.98, 1.04) |
|
| ||||
| Hospital teaching status (ref = Non-teaching) | ||||
| Teaching Hospital | 0.98 | (0.96, 1.00) | 1.02 | (1.00, 1.04) |
| Annual Discharge (per 10k) | *1.02 | (1.01, 1.03) | 1.00 | (0.99, 1.02) |
| Hospital Proportion Medicaid annual patient days (per 10%) | *0.99 | (0.98, 1.00) | *1.01 | (1.00, 1.02) |
Note: Odds Ratios with 95% Confidence Intervals Presented.
*
denotes P < .05.
Full model with performance specifications can be found in supporting information online, undisplayed covariates in this table include year, quarter, hospital size, and hospital urban/rural designation.
Abbreviations: COPD, chronic obstructive pulmonary disease; OR: odds ratios; SD standard deviation.