Table 2.

Clinical characteristics in the propensity score–matched AKI-recovery and non-AKI cohorts

CharacteristicAKI-Recovery Group (n=4565)Non-AKI Group (n=4565)P Value
Men 2598 (56.9)2598 (56.9)0.99
Age (yr)63.63±16.5363.63±16.510.97
Preadmission comorbidities
 Charlson comorbidity index scorea2 (0–3)2 (0–3)0.99
 Myocardial infarction174 (3.8)191 (4.2)0.39
 Congestive heart failure553 (12.1)531 (11.6)0.50
 Peripheral vascular disease70 (1.5)87 (1.9)0.20
 Cerebrovascular disease476 (10.4)510 (11.2)0.27
 Dementia116 (2.5)121 (2.7)0.79
 Chronic obstructive pulmonary disease524 (11.5)488 (10.7)0.24
 Rheumatologic disease55 (1.2)70 (1.5)0.21
 Hemiplegia62 (1.4)71 (1.6)0.49
 Malignancy310 (6.8)293 (6.4)0.50
 Diabetes mellitus1511 (33.1)1587 (34.8)0.10
 Moderate or severe liver disease274 (6)251 (5.5)0.32
 CKD533 (11.7)540 (11.8)0.85
 Hypertension2059 (45.1)2010 (44)0.31
 Dyslipidemia436 (9.6)429 (9.4)0.83
In-hospital acute comorbidities
 ICU admission2972 (65.1)2995 (65.6)0.63
Operation categories
 Cardiothoracic191 (4.2)171 (3.7)0.31
 Upper gastrointestinal28 (0.6)29 (0.6)0.99
 Lower gastrointestinal96 (2.1)81 (1.8)0.29
 Hepatobiliary58 (1.3)54 (1.2)0.78
Acute organ dysfunction
 Cardiovascular326 (7.1)307 (6.7)0.46
 Respiratory855 (18.7)843 (18.5)0.77
 Hepatic86 (1.9)84 (1.8)0.94
 Neurologic80 (1.8)94 (2.1)0.32
 Hematologic70 (1.5)82 (1.8)0.37
 Severe sepsis835 (18.3)527 (11.5)<0.001
 Shock335 (7.3)296 (6.5)0.12
 Myocardial infarction271 (5.9)372 (8.1)<0.001
 Hepatorenal syndrome9 (0.2)0 (0)0.004
 Obstructive uropathy110 (2.4)5 (0.1)<0.001
 Exposure to contrast material1082 (23.7)922 (20.2)<0.001
  • Unless otherwise noted, values are the number (percentage) of participants. ICU, intensive care unit.

  • a Median (25th–75th percentile).