Table 3.
Adjusted model of risk for severe morbidity
| Adjusted risk ratio (95% confidence interval) | |
|---|---|
| Liver transplant | 8.41 (5.55, 12.76)** |
| Year | |
| 1998 to 2000 | Referent |
| 2001 to 2003 | 1.03 (0.99, 1.09) |
| 2004 to 2006 | 1.05 (0.99, 1.11) |
| 2007 to 2009 | 1.11 (1.05, 1.18)* |
| 2010 to 2011 | 1.37 (1.27, 1.47)** |
| 2012 to 2014 | 1.48 (1.41, 1.56)** |
| Maternal age, years | |
| 15 to 18 | 1.19 (1.13, 1.25)** |
| 19 to 24 | 0.96 (0.94, 0.98)* |
| 25 to 29 | Referent |
| 30 to 34 | 1.16 (1.13, 1.18)** |
| 35 to 39 | 1.41 (1.37, 1.44)** |
| 40 to 54 | 1.91 (1.84, 1.99)** |
| Comorbidity index | |
| 0 | Referent |
| 1 | 2.77 (2.70, 2.84)** |
| >1 | 9.15 (8.84, 9.47)** |
| Hospital bed size | |
| Small | Referent |
| Medium | 1.17 (1.11, 1.23)** |
| Large | 1.25 (1.18, 1.31)** |
| Insurance status | |
| Medicaid | 1.08 (1.05, 1.11)** |
| Private | Referent |
| Other | 1.06 (1.01, 1.11)* |
| Hospital Location | |
| Rural | 1.00 (0.94, 1.06) |
| Urban | Referent |
| ZIP Income Quartile | |
| 1st | Referent |
| 2nd | 1.01 (0.98, 1.04) |
| 3rd | 0.97 (0.93, 1.00)* |
| 4th | 0.89 (0.85, 0.93)** |
| Maternal race | |
| White | Referent |
| Black | 1.45 (1.39, 1.50)** |
| Hispanic | 1.08 (1.04, 1.13)* |
| Other | 1.15 (1.11, 1.20)** |
| Unknown | 1.04 (0.98, 1.11) |
| Hospital Region | |
| Northeast | Referent |
| Midwest | 1.03 (0.96, 1.11) |
| South | 1.10 (1.03, 1.17)* |
| West | 1.06 (0.99, 1.14) |
| Teaching | |
| Non-teaching | 1.26 (1.20, 1.32)** |
| Teaching | Referent |
Adjusted model included all factors in this table. * <0.05; ** <0.01. The effect of liver transplant is presented with absence of the condition as a referent.