|  | Unadjusted ORs | ||||
---|---|---|---|---|---|---|
 | Sodium (mEq/L) | Sodium (mEq/L) | ||||
 | < 135 | 135–145 | > 145 | < 135 | 135–145 | > 145 |
 | (n = 87,476) | (n = 1,010,167) | (n = 11,061) | (n = 87,476) | (n = 1,010,167) | (n = 11,061) |
Thromboembolism | 1577 (1.8) | 9705 (1.0) | 276 (2.5) | 1.89 (1.79–2.00) | Reference | 2.64 (2.34–2.98) |
Mortality | 4479 (5.1) | 13,972 (1.4) | 1014 (9.2) | 3.85 (3.72–3.98) | Reference | 7.20 (6.73–7.69) |
Composite morbiditya | 14,795 (16.9) | 73,563 (7.3) | 2442 (22.1) | 2.59 (2.54–2.64) | Reference | 3.61 (3.45–3.78) |
 Wound | 3908 (4.5) | 23,316 (2.3) | 439 (4.0) | 1.98 (1.91–2.05) | Reference | 1.75 (1.59–1.93) |
 Cardiac | 1694 (1.9) | 7472 (0.7) | 263 (2.4) | 2.65 (2.51–2.80) | Reference | 3.27 (2.89–3.70) |
 Respiratory | 7772 (8.9) | 31,741 (3.1) | 1639 (14.8) | 3.01 (2.93–3.08) | Reference | 5.36 (5.08–5.66) |
 Urinary | 1724 (2.0) | 7627 (0.8) | 378 (3.4) | 2.64 (2.51–2.79) | Reference | 4.65 (4.19–5.17) |
 CNS | 655 (0.8) | 3938 (0.4) | 135 (1.2) | 1.93 (1.77–2.10) | Reference | 3.16 (2.66–3.75) |
 Sepsis | 5618 (6.4) | 25,568 (2.5) | 870 (7.9) | 2.64 (2.57–2.72) | Reference | 3.29 (3.06–3.53) |
Bleeding | 8128 (9.3) | 43,090 (4.3) | 1036 (9.4) | 2.30 (2.24–2.36) | Reference | 2.32 (2.18–2.48) |
Return to operation room | 8490 (9.7) | 45,091 (4.5) | 1004 (9.1) | 2.30 (2.25–2.36) | Reference | 2.14 (2.00–2.28) |
Readmission (related)b | 2062 (9.0) | 16,099 (5.9) | 203 (6.7) | 1.59 (1.52–1.67) | Reference | 1.15 (1.00–1.33) |