Table 1.
Cohort Characteristics and Coefficients of Individual and Hospital Characteristics as Predictors of Mortality in Three Postsurgical Periods
| Estimated Coefficient (Standard Error) by Period | ||||
|---|---|---|---|---|
| % of Cohort | 0–30 Days | 30 Days to 1 Year | 1–5 Years | |
| Intercept | −4.044 (0.101) | −2.953 (0.057) | −1.071 (0.043) | |
| Age 18–54 | 12.3 | −1.565 (0.199) | −1.115 (0.084) | −0.811 (0.043) |
| Age 55–59 | 7.1 | −0.924 (0.181) | −1.014 (0.100) | −0.817 (0.051) |
| Age 60–64 | 9.4 | −1.041 (0.151) | −0.657 (0.076) | −0.638 (0.047) |
| Age 65–69 | 13.4 | −0.771 (0.117) | −0.540 (0.066) | −0.512 (0.040) |
| Age 70–74 | 16.6 | −0.515 (0.098) | −0.289 (0.054) | −0.308 (0.035) |
| Age 75–79 | 17.2 | Ref | Ref | Ref |
| Age 80–84 | 13.2 | 0.322 (0.082) | 0.308 (0.051) | 0.372 (0.038) |
| Age 85+ | 10.8 | 0.923 (0.077) | 0.845 (0.052) | 0.927 (0.041) |
| Colon 1 | 17.5 | −0.497 (0.087) | −0.475 (0.058) | −0.522 (0.036) |
| Colon 2 | 32.9 | Ref | Ref | Ref |
| Colon 3 | 24.7 | 0.052 (0.065) | 0.798 (0.039) | 0.779 (0.030) |
| Rectal 1 | 7.9 | −0.456 (0.129) | −0.440 (0.086) | −0.371 (0.048) |
| Rectal 2 | 8.4 | −0.116 (0.106) | 0.184 (0.067) | 0.370 (0.042) |
| Rectal 3 | 8.7 | −0.118 (0.114) | 0.654 (0.061) | 1.037 (0.040) |
| Income U.S.≤$27,500 | 22.3 | 0.259 (0.082) | 0.163 (0.051) | 0.154 (0.034) |
| Income U.S.$27,500–37,500 | 22.4 | 0.241 (0.081) | 0.064 (0.052) | 0.119 (0.033) |
| Income U.S.$37,500–52,500 | 27.3 | 0.157 (0.078) | 0.071 (0.049) | 0.088 (0.032) |
| Income U.S.≥$52,500 | 23.3 | Ref | Ref | Ref |
| Income missing* | 4.7 | 0.166 (0.138) | 0.068 (0.085) | −0.072 (0.058) |
| Female | 49.5 | −0.196 (0.055) | −0.047 (0.033) | −0.229 (0.023) |
| Male | 50.5 | Ref | Ref | Ref |
| White | 75.7 | Ref | Ref | Ref |
| African American | 6.0 | 0.018 (0.127) | 0.001 (0.074) | 0.217 (0.049) |
| Hispanic | 9.6 | −0.125 (0.102) | −0.087 (0.060) | 0.009 (0.038) |
| Asian | 8.3 | −0.239 (0.128) | −0.359 (0.076) | −0.194 (0.045) |
| Other race | 0.4 | 0.315 (0.366) | −0.184 (0.276) | 0.083 (0.163) |
| Charlson 0 | 64.1 | Ref | Ref | Ref |
| Charlson 1 | 21.9 | 0.756 (0.070) | 0.503 (0.040) | 0.373 (0.027) |
| Charlson 2 | 7.8 | 1.358 (0.081) | 0.979 (0.051) | 0.810 (0.042) |
| Charlson≥3 | 6.1 | 1.756 (0.077) | 1.598 (0.050) | 1.329 (0.048) |
| Volume 100–150 | 13.7 | 0.202 (0.089) | 0.233 (0.052) | 0.076 (0.041) |
| Volume 151–300 | 34.4 | 0.186 (0.072) | 0.191 (0.040) | 0.034 (0.033) |
| Volume>300 | 51.9 | Ref | Ref | Ref |
Notes. Coefficients are from random effects logistic regression models.
Boldface represents p<.05.
*
Income missing due to address that could not be geocoded to block group.