Table 3.
Predictors of Hospitalization for a primary discharge diagnosis of AIH vs. non-AIH
| Factor | OR | 95% CI | P-value | |
|---|---|---|---|---|
| Lower | Upper | |||
| Age, yr | ||||
| Age (1 yr) | 1.01 | 1.01 | 1.01 | <0.01 |
| Gender | ||||
| Male | REF | |||
| Female | 3.09 | 2.69 | 3.56 | <0.01 |
| Race | ||||
| White | REF | |||
| Black | 1.49 | 1.28 | 1.75 | <0.01 |
| Latino | 1.83 | 1.54 | 2.16 | <0.01 |
| Asian/Pacific islander | 0.62 | 0.42 | 0.92 | 0.02 |
| Native American | 0.71 | 0.33 | 1.52 | 0.38 |
| Other | 1.23 | 0.91 | 1.67 | 0.18 |
| Payer | ||||
| Medicare | REF | |||
| Medicaid | 1.49 | 1.2 | 1.84 | <0.01 |
| Private | 2.39 | 1.95 | 2.71 | <0.01 |
| Self-pay | 3.14 | 2.4 | 4.11 | <0.01 |
| No charge | 4.46 | 2.44 | 8.15 | <0.01 |
| Other | 2.84 | 2.14 | 3.77 | <0.01 |
| Residence | ||||
| Central metro >1 mil | REF | |||
| Fringe metro >1 mil | 0.91 | 0.77 | 1.07 | 0.25 |
| Metro 250 K–1 mil | 0.93 | 0.77 | 1.11 | 0.40 |
| Metro 50–250 K | 0.98 | 0.79 | 1.22 | 0.87 |
| Micropolitan | 1.05 | 0.83 | 1.32 | 0.68 |
| Not metro or micropolitan | 0.99 | 0.75 | 1.3 | 0.94 |
| Zip code income | ||||
| Bottom quartile | REF | |||
| Second quartile | 1.20 | 1.04 | 1.38 | 0.01 |
| Third quartile | 1.05 | 0.89 | 1.23 | 0.53 |
| Top quartile | 1.13 | 0.96 | 1.35 | 0.14 |
| Region | ||||
| East | REF | |||
| Midwest | 0.95 | 0.74 | 1.22 | 0.68 |
| South | 0.96 | 0.79 | 1.16 | 0.65 |
| West | 1.00 | 0.79 | 1.27 | 1.00 |
AIH, autoimmune hepatitis; CI, confidence interval; OR, odds ratio; yr, year.