Table 3.
Factor | # of Patients with Factor Present | % Readmitted if Factor Present | % Readmitted if Factor Absent | P |
---|---|---|---|---|
Age | <0.023 | |||
65–74 | 1007 | 11.0 | n/a | |
75–84 | 1246 | 14.1 | n/a | |
≥85 | 228 | 16.7 | n/a | |
Gender | 0.048 | |||
Male | 1887 | 12.4 | n/a | |
Female | 594 | 15.5 | n/a | |
Race | 0.99 | |||
White | 2340 | 13.1 | n/a | |
Black | 83 | 13.3 | n/a | |
Other | 58 | 13.8 | n/a | |
Reason for Medicare entitlement | 0.50 | |||
Age | 2225 | 13.4 | n/a | |
Disability | 254 | 11.0 | n/a | |
End-stage renal disease | † | 0 | n/a | |
Medicaid enrollment | 192 | 13.0 | 13.1 | 0.95 |
Charlson comorbidity score | <0.001 | |||
1st tertile | 1372 | 10.5 | n/a | |
2nd tertile | 568 | 13.9 | n/a | |
3rd tertile | 541 | 18.9 | n/a | |
Comorbid conditions (Elixhauser codes) | ||||
Paralysis | 44 | 25.0 | 12.9 | 0.018 |
Other neurologic disease | 150 | 19.3 | 12.7 | 0.020 |
Anemia | 509 | 18.9 | 11.6 | <0.001 |
Congestive heart failure | 441 | 18.4 | 12.0 | <0.001 |
Renal failure | 230 | 17.8 | 12.6 | 0.026 |
Obesity | 80 | 17.5 | 13.0 | 0.24 |
Coagulation disorder | 138 | 17.4 | 12.9 | 0.12 |
History of cancer | 428 | 16.4 | 12.4 | 0.028 |
Hypothyroidism | 297 | 16.5 | 12.6 | 0.064 |
Diabetes mellitus | 565 | 15.4 | 12.4 | 0.065 |
Chronic pulmonary disease | 1023 | 14.9 | 11.9 | 0.030 |
Valvular disease | 630 | 14.3 | 12.7 | 0.31 |
Hypertension | 1982 | 13.3 | 12.2 | 0.52 |
Weight loss | 143 | 15.4 | 13.0 | 0.40 |
Depression | 138 | 14.5 | 13.0 | 0.62 |
Peripheral vascular disease | 2380 | 12.9 | 16.8 | 0.26 |
Fluid or electrolyte disorder | 321 | 16.8 | 12.6 | 0.034 |
Other comorbidity | 494 | 14.4 | 12.8 | 0.35 |
Patient area of residence | 0.34 | |||
Urban | 1487 | 13.9 | n/a | |
Suburban | 256 | 14.8 | n/a | |
Large town | 362 | 11.3 | n/a | |
Small town or rural | 363 | 10.7 | n/a | |
Missing | 13 | 7.7 | n/a | |
Underwent procedure at high volume hospital | 1102 | 14.0 | 12.4 | 0.25 |
Had in-hospital complication | ||||
Any complication | 724 | 17.4 | 11.3 | <0.001 |
Wound | 31 | 35.5 | 12.8 | <0.001 |
Reoperation (for non-vascular complications) | 20 | 25.0 | 13.0 | 0.11 |
Renal/Urologic | 77 | 26.0 | 12.7 | 0.001 |
Vascular/graft-related | 164 | 20.1 | 12.6 | 0.006 |
Cardiac | 117 | 20.5 | 12.7 | 0.015 |
Respiratory | 254 | 17.3 | 12.6 | 0.035 |
Hemorrhage/shock | 245 | 16.3 | 12.8 | 0.12 |
Neurologic | 68 | 16.2 | 13.1 | 0.45 |
Venous thromboembolism | 12 | 8.3 | 13.1 | 0.62 |
Prolonged length of stay (>7d) | 601 | 19.1 | 11.2 | <0.001 |
Discharge destination | <0.001 | |||
Home | 1754 | 9.9 | n/a | |
Home with home care | 381 | 16.8 | n/a | |
Skilled nursing facility | 223 | 27.4 | n/a | |
Other facility | 123 | 21.1 | n/a | |
Procedure type | 0.69 | |||
Endovascular | 1502 | 13.3 | n/a | |
Open | 979 | 12.8 | n/a | |
30-day mortality* | 16 | 62.5 | 12.8 | <0.001 |
One-year mortality* | 173 | 43.9 | 10.8 | <0.001 |
Mortality outcome variables only include deaths that occurred after discharge and exclude deaths that occurred during the index/surgical hospital stay.
Exact cell size suppressed per data use agreement to protect patient confidentiality as n < 11.