Table 3.
Postoperative outcomes of patients who underwent coronary artery bypass grafting at SNH versus non-SNHs
| Variable | Unmatched (n = 525,179) |
Matched (n = 204,053) |
||||
|---|---|---|---|---|---|---|
| SNHs (n = 96,133) | Non-SNHs (n = 429,046) | P Value | SNHs (n = 95,911) | Non-SNHs (n = 108,142) | P Value | |
| In-hospital mortality | 2018 (2.1%) | 7865 (1.8%) | .004 | 2017 (2.1%) | 2076 (1.9%) | .11 |
| Acute kidney injury | 20,773 (21.6%) | 85,339 (19.9%) | <.001 | 20,704 (21.6%) | 22,983 (21.3%) | .54 |
| Stroke | 1926 (2.0%) | 7140 (1.7%) | <.001 | 1915 (2.0%) | 2174 (2.0%) | .90 |
| Respiratory failure | 19,383 (20.2%) | 80,746 (18.8%) | .10 | 19,335 (20.2%) | 21,981 (20.3%) | .85 |
| Infection | ||||||
| Surgical site infection | 371 (0.4%) | 1348 (0.3%) | .07 | 368 (0.4%) | 376 (0.3%) | .42 |
| Deep sternal wound infection | 235 (0.2%) | 991 (0.2%) | .63 | 236 (0.2%) | 256 (0.2%) | .80 |
| Pneumonia | 5971 (6.2%) | 19,722 (4.6%) | <.001 | 5941 (6.2%) | 5435 (5.0%) | <.001 |
| Sepsis | 2580 (2.7%) | 8278 (1.9%) | <.001 | 2569 (2.7%) | 2397 (2.2%) | <.001 |
| LOS, days | 9 (6-13) | 8 (6-11) | <.001 | 9 (6-13) | 8 (6-12) | <.001 |
| Total cost, $ | $46,999 (35,677-62,800) | $38,417 (29,623-52,025) | <.001 | $46,977 (35,670-62,773) | $39,343 (30,501-53,160) | <.001 |
| Discharge disposition | <.001 | <.001 | ||||
| Routine | 43,707 (46.4%) | 158,968 (37.7%) | 43,611 (46.4%) | 38,187 (36.0%) | ||
| Home health care | 32,991 (35.1%) | 184,169 (43.7%) | 32,904 (35.0%) | 48,556 (45.8%) | ||
| SNF or LTACH | 16,514 (17.5%) | 75,401 (17.9%) | 16,482 (17.6%) | 18,592 (17.5%) | ||
| Other | 872 (1.0%) | 2488 (0.7%) | 868 (1.0%) | 674 (0.7%) | ||
| Readmission within 30 d∗ | 10,643 (12.4%) (n = 86,171) | 43,408 (11.3%) (n = 385,166) | <.001 | 10,607 (12.3%) (n = 85,969) | 11,541 (11.9%) (n = 97,118) | .13 |
| Readmission within 90 d† | 13,476 (19.0%) (n = 70,859) | 55,814 (17.7%) (n = 315,631) | <.001 | 13,427 (19.0%) (n = 70,688) | 14,713 (18.6%) (n = 79,307) | .27 |
SNHs, Safety-net hospitals; LOS, length of stay; SNF, skilled nursing facility; LTACH, long-term acute care hospital.
∗
Admissions in the month of December excluded.
†
Admissions in the months of October through December excluded. Categorical variables are presented as number (%) and continuous variables are presented as median (interquartile range).