Table 2.
Risk factor analysis of mortality within 12 months. Adjusted for calendar year.
| Basic Statistics | Univariate Model RR | Multivariate Model RR | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Characteristic | Observed N=37748 | Subject Deaths n=10700 | P | RR & 95% CI | P | Global P | RR & 95% CI | P | Global P |
| Type of surgery/procedure | |||||||||
| Gastrectomy | 9791 (25.9) | 2689 (27.5) | <.0001 | Ref. | <.0001 | Ref. | <.0001 | ||
| Cystectomy | 14294 (37.9) | 3723 (26.0) | 0.95 (0.91 – 0.99) | 0.0143 | 1.15 (1.10 – 1.20) | <.0001 | |||
| Pancreaticoduodenectomy | 10845 (28.7) | 3546 (32.7) | 1.19 (1.14 – 1.24) | <.0001 | 1.25 (1.20 – 1.30) | <.0001 | |||
| Esophagectomy | 2818 (7.5) | 742 (26.3) | 0.96 (0.89 – 1.03) | 0.2357 | 0.96 (0.89 – 1.03) | 0.2136 | |||
| Age (years) | |||||||||
| 65–69 | 11448 (30.3) | 2725 (23.8) | <.0001 | Ref. | <.0001 | Ref. | <.0001 | ||
| 70–74 | 8304 (22.0) | 2162 (26.0) | 1.09 (1.04 – 1.15) | 0.0003 | 1.05 (1.00 – 1.10) | 0.0500 | |||
| 75–79 | 9133 (24.2) | 2648 (29.0) | 1.22 (1.16 – 1.28) | <.0001 | 1.11 (1.06 – 1.16) | <.0001 | |||
| 80–84 | 6035 (16.0) | 2041 (33.8) | 1.42 (1.35 – 1.49) | <.0001 | 1.20 (1.14 – 1.26) | <.0001 | |||
| ≥85 | 2828 (7.5) | 1124 (39.7) | 1.67 (1.58 – 1.77) | <.0001 | 1.31 (1.24 – 1.39) | <.0001 | |||
| Gender | |||||||||
| Male | 25021 (66.3) | 7067 (28.2) | 0.5391 | Ref. | 0.5396 | Ref. | <.0001 | ||
| Female | 12727 (33.7) | 3633 (28.5) | 1.01 (0.98 – 1.05) | 0.5389 | 0.91 (0.88 – 0.94) | <.0001 | |||
| Race | |||||||||
| White | 31778 (84.2) | 8996 (28.3) | <.0001 | Ref. | <.0001 | Ref. | <.0001 | ||
| Black | 3314 (8.8) | 1066 (32.2) | 1.14 (1.08 – 1.20) | <.0001 | 1.07 (1.02 – 1.13) | 0.0063 | |||
| Other | 2656 (7.0) | 638 (24.0) | 0.85 (0.79 – 0.91) | <.0001 | 0.88 (0.82 – 0.94) | 0.0002 | |||
| Charlson Comorbidity Index Score | |||||||||
| 0 to 1 | 17525 (46.4) | 3905 (22.3) | <.0001 | Ref. | <.0001 | Ref. | <.0001 | ||
| 2 to 3 | 17831 (47.2) | 5752 (32.3) | 1.45 (1.40 – 1.50) | <.0001 | 1.36 (1.31 – 1.41) | <.0001 | |||
| >4 | 2392 (6.3) | 1043 (43.6) | 1.96 (1.86 – 2.06) | <.0001 | 1.59 (1.50 – 1.68) | <.0001 | |||
| Hospital length of stay (days) | |||||||||
| 1–6 | 7619 (20.2) | 1494 (19.6) | <.0001 | Ref. | <.0001 | Ref. | <.0001 | ||
| 7–8 | 9458 (25.1) | 2073 (21.9) | 1.12 (1.05 – 1.19) | 0.0002 | 1.06 (1.00 – 1.12) | 0.0565 | |||
| 9–13 | 10360 (27.4) | 2853 (27.5) | 1.40 (1.33 – 1.48) | <.0001 | 1.24 (1.17 – 1.31) | <.0001 | |||
| ≥14 | 10311 (27.3) | 4280 (41.5) | 2.12 (2.01 – 2.23) | <.0001 | 1.57 (1.49 – 1.65) | <.0001 | |||
| Discharge disposition | |||||||||
| Home (no assistance) | 28166 (74.6) | 6157 (21.9) | <.0001 | Ref. | <.0001 | Ref. | <.0001 | ||
| Facility (SNF, Hospice, Inpatient) | 9582 (25.4) | 4543 (47.4) | 2.17 (2.10 – 2.24) | <.0001 | 1.77 (1.71 – 1.83) | <.0001 | |||