Table 1. Demographics and Clinical Characteristics of Patients.
| Clinical characteristics | SCr ≥ 1.2 (n = 148) | SCr < 1.2 (n = 508) | P value |
|---|---|---|---|
| Age (years) (mean ± SD) | 66.84 ± 13.66 | 59.45 ± 11.70 | < 0.0001 |
| Sex male (%) | 81.76 (n = 121) | 69.69 (n = 354) | |
| BMI (mean ± SD) | 28.51 ± 5.55 | 29.54 ± 6.42 | 0.08 |
| Caucasian race (%) | 89.19 (n = 132) | 88.5 (n = 450) | 0.82 |
| African American race (%) | 9.46 (n = 14) | 10.24 (n = 52) | 0.78 |
| Hispanic race (%) | 0 (n = 0) | 0.20 (n = 1) | 0.59 |
| Other race (%) | 0.68 (n = 1) | 0.79 (n = 4) | |
| Unkown race (%) | 0.68 (n = 1) | 0.20 (n = 1) | |
| Initial creatinine (mg/dL) (mean ± SD) | 1.82 ± 1.88 | 0.89 ± 0.16 | < 0.0001 |
| eGFR (mL/min/1.73 m2) (mean ± SD) | 48.36 ± 16.08 | 87.37 ± 16.53 | <0.0001 |
| Initial troponin | 4.79 ± 13.05 | 4.67 ± 19.53 | 0.944 |
| Peak troponin | 83.1 ± 71.29 | 71.22 ± 66.78 | 0.0612 |
| Hx of hypertension (%) | 74.32 (n = 110) | 59.64 (n = 303) | < 0.005 |
| Hx of smoker (%) | 35.81 (n = 53) | 52.75 (n = 268) | < 0.0005 |
| Current heart failure (%) | 4.05 (n = 6) | 2.75 (n = 14) | 0.42 |
| Hx of dyslipidemia (%) | 64.86 (n = 96) | 47.63 (n = 242) | < 0.0005 |
| Hx of chronic lung disease (%) | 10.13 (n = 15) | 7.08 (n = 36) | 0.22 |
| Hx of diabetes (%) | 22.97 (n = 34) | 18.5 (n = 97) | 0.23 |
| Hx of prior MI (%) | 29.72 (n = 44) | 18.3 (n = 93) | < 0.005 |
| Hx of prior heart failure (%) | 8.78 (n = 13) | 3.74 (n = 19) | < 0.05 |
| Hx of A fib/A flutter (%) | 3.37 (n = 5) | 1.18 (n = 6) | 0.07 |
| Hx of prior PCI (%) | 27.7 (n = 41) | 17.51 (n = 89) | < 0.01 |
| Hx of prior CABG (%) | 13.51 (n = 20) | 6.88 (n = 35) | < 0.05 |
| Hx of cerebrovascular stroke (%) | 8.1 (n = 12) | 3.74 (n = 19) | < 0.05 |
| Hx of cerebrovascular disease (%) | 15.54 (n = 23) | 5.51 (n = 28) | < 0.0005 |
| Hx of peripheral arterial disease (%) | 14.18 (n = 21) | 5.7 (n = 29) | < 0.001 |
| Hx of current dialysis (%) | 2.02 (n = 3) | 0 (n = 0) | |
| Hx of cerebrovascular TIA (%) | 3.38 (n = 5) | 0.79 (n = 4) | < 0.05 |
Scr: serum creatinine at admission; BMI: body mass index; eGFR: estimated glomerular filtration rate; Hx: history; MI: myocardial infarction; PCI: percutaneous coronary intervention; CABG: coronary artery bypass grafting; TIA: transient ischemic attack; A fib: atrial fibrillation; A flutter: atrial flutter.