Table 4.
Multivariable models of predictors of use of HA-CMC use for patients who underwent hysterectomy and colectomy.
| Hysterectomy | Colectomy | |
|---|---|---|
| Age | ||
| <60 | Referent | Referent |
| ≥60 | 1.02 (0.97–1.07) | 0.91 (0.87–0.94)* |
| Gender | ||
| Male | – | Referent |
| Female | – | 1.05 (1.02–1.08)* |
| Race | ||
| White | Referent | Referent |
| Black | 1.04 (0.99–1.08) | 1.00 (0.95–1.05) |
| Other/unknown | 1.08 (1.03–1.13)* | 0.96 (0.91–1.01) |
| Year of diagnosis | ||
| 2000 | Referent | Referent |
| 2001 | 2.24 (1.64–3.05)* | 1.73 (1.41–2.12)* |
| 2002 | 4.48 (3.37–5.94)* | 3.07 (2.53–3.71)* |
| 2003 | 11.21 (8.56–14.68)* | 5.55 (4.61–6.67)* |
| 2004 | 19.81 (15.16–25.88)* | 6.15 (5.12–7.40)* |
| 2005 | 25.49 (19.39–32.88)* | 6.73 (5.61–8.07)* |
| 2006 | 37.21 (28.61–48.40)* | 7.35 (6.13–8.81)* |
| 2007 | 54.80 (42.13–71.27)* | 8.43 (7.03–10.11)* |
| 2008 | 71.49 (54.88–91.13)* | 9.95 (8.29–11.93)* |
| 2009 | 79.83 (61.26–104.04)* | 12.24 (10.19–14.70)* |
| 2010 | 77.18 (58.86–101.19)* | 12.63 (10.43–15.30)* |
| Insurance | ||
| Commercial | Referent | Referent |
| Medicare | 1.02 (0.97–1.08) | 0.91 (0.88–0.95)* |
| Medicaid | 0.99 (0.93–1.05) | 0.97 (0.90–1.04) |
| Uninsured | 1.00 (0.93–1.07) | 0.97 (0.90–1.05) |
| Unknown | 0.98 (0.88–1.08) | 0.94 (0.85–1.03) |
| Marital status | ||
| Married | Referent | Referent |
| Single | 1.02 (0.98–1.06) | 0.96 (0.93–1.00) |
| Unknown | 0.97 (0.93–1.00) | 0.94 (0.91–0.97)* |
| Area of residence | ||
| Metropolitan | Referent | Referent |
| Non-metropolitan | 0.48 (0.28–0.80)* | 0.62 (0.35–1.11) |
| Region | ||
| Eastern | Referent | Referent |
| Midwest | 1.17 (0.62–2.23) | 1.47 (0.72–3.01) |
| Southern | 0.94 (0.51–1.71) | 1.71 (0.88–3.35) |
| Western | 1.37 (0.67–2.80) | 1.53 (0.68–3.44) |
| Cancer | ||
| No | Referent | Referent |
| Yes | 1.38 (1.32–1.45)* | 0.86 (0.84–0.89)* |
| Comorbidity | ||
| 0 | Referent | Referent |
| 1 | 1.14 (1.09–1.19)* | 1.04 (1.00–1.08)* |
| ≥2 | 1.26 (1.20–1.33)* | 1.06 (1.02–1.10)* |
| Hospital type | ||
| Non-teaching | Referent | Referent |
| Teaching | 1.09 (0.68–1.75) | 1.90 (1.11–3.25)* |
| Hospital size | ||
| <400 beds | Referent | Referent |
| 400-600 beds | 1.17 (0.70–1.96) | 0.83 (0.44–1.56) |
| >600 beds | 0.95 (0.44–2.01) | 0.78 (0.31–1.95) |
| Hospital volume | ||
| Low | Referent | Referent |
| Intermediate | 1.50 (0.92–2.43) | 1.30 (0.74–2.29) |
| High | 1.41 (0.69–2.86) | 2.27 (0.99–5.20) |
| Surgeon volume | ||
| Low | Referent | Referent |
| Intermediate | 1.30 (1.24–1.36)* | 1.16 (1.12–1.20)* |
| High | 2.40 (2.29–2.50)* | 1.30 (1.25–1.35)* |
| Unknown | 2.52 (2.21–2.87)* | 1.70 (1.48–1.94)* |
Relative risk (95% confidence interval).