Table 4.
Relative survival
| Covariate | RER | 95% CI | P |
|---|---|---|---|
| Year of first transplant | |||
| <1997 | (reference) | — | — |
| 1998-2003 | 0.77 | 0.68-0.88 | <.0001 |
| 2004-2008 | 0.66 | 0.58-0.75 | <.0001 |
| 2009-2013 | 0.65 | 0.55-0.76 | <.0001 |
| ≥2014 | 0.30 | 0.22-0.41 | <.0001 |
| Sex | |||
| Male | (reference) | — | — |
| Female | 0.95 | 0.87-1.05 | .31 |
| Age, y | |||
| <65 | (reference) | — | — |
| ≥65 | 1.45 | 1.30-1.62 | <.0001 |
| Race/ethnicity | |||
| White | (reference) | — | — |
| African American | 1.12 | 0.96-1.32 | .14 |
| Other | 1.11 | 0.88-1.41 | .37 |
| Clinical trial | |||
| Non-TT | (reference) | — | — |
| TT participant | 0.54 | 0.49-0.59 | <.0001 |
Covariates with an RER <1.0 have smaller relative excess risk for MM death compared with the reference group, after taking into account normal mortality differences by age, sex, race/ethnicity, and year, as reported in the SEER life tables. Covariates with an RER >1.0 have a larger relative excess risk for MM death compared with the reference group.