Table 2. Multivariable analyses of factors associated with surgical procedures for inpatients with IHC.
| Variables | Adjusted odds ratio (95% CI) | P values |
|---|---|---|
| Age group in years | ||
| <50 | Ref | – |
| 50–59 | 0.88 (0.69–1.12) | 0.191 |
| 60–69 | 0.98 (0.77–1.17) | 0.866 |
| 70–79 | 0.90 (0.66–1.09) | 0.385 |
| >79 | 0.42 (0.28–0.50) | <0.0001 |
| Sex | ||
| Male | Ref | – |
| Female | 1.10 (0.97–1.23) | 0.124 |
| Race | ||
| Whites | Ref | – |
| Black | 0.49 (0.42–0.69) | <0.0001 |
| Hispanic | 0.59 (0.44–0.78) | 0.0004 |
| Asian/Pacific Islander | 0.69 (0.52–0.99) | 0.025 |
| Other | 0.97 (0.74–1.26) | 0.804 |
| Source of payment | ||
| Medicare | Ref | – |
| Medicaid | 0.57 (0.42–0.76) | 0.001 |
| Private | 1.01 (0.86–1.19) | 0.986 |
| Uninsured/others | 0.82 (0.65–1.19) | 0.181 |
| Hospital region | ||
| Northeast | Ref | – |
| Midwest | 1.14 (0.79–1.64) | 0.498 |
| South | 1.05 (0.80–1.39) | 0.7112 |
| West | 1.15 (0.83–1.58) | 0.402 |
| Hospital location/ status | ||
| Rural | Ref | – |
| Urban | 2.10 (1.11–3.99) | 0.023 |
| Teaching status | ||
| Non-teaching | Ref | – |
| Teaching | 4.67 (3.58–6.09) | <0.0001 |
| Elixhauser comorbidity score | ||
| 0 | Ref | – |
| 1 or 2 | 0.81 (0.65–1.01) | 0.056 |
| ≥3 | 0.52 (0.42–0.66) | <0.0001 |
| Admission year | ||
| 2005–2006 | Ref | |
| 2007–2008 | 1.18 (0.86–1.61) | 0.309 |
| 2009–2010 | 1.04 (0.78–1.40) | 0.779 |
| 2011–2012 | 1.40 (1.08–1.81) | 0.012 |
| 2013–2014 | 1.31 (1.02–1.67) | 0.032 |