Table 1 Clinical characteristics according to positive or negative cTnI.

From: Cardiac troponin I and the risk of cardiovascular or non-cardiovascular death in patients visiting the emergency department

 

Negative cTnI (N = 30,713)

Positive cTnI (N = 6093)

p-value

Age (years)

59 (48–70)

67 (56–76)

< 0.001

Age ≥ 65 years

11,862 (38.6)

3457 (56.7)

< 0.001

Male sex

16,726 (54.5)

3656 (60.0)

< 0.001

Diabetes

3487 (11.4)

1222 (20.1)

< 0.001

Hypertension

8632 (28.1)

2661 (43.7)

< 0.001

Chronic kidney disease

1216 (4.0)

641 (10.5)

< 0.001

Smoking

2194 (7.1)

778 (12.8)

< 0.001

History of stroke

1081 (3.5)

392 (6.4)

< 0.001

History of coronary artery disease

624 (2.0)

305 (5.0)

< 0.001

History of myocardial infarction

130 (0.4)

122 (2.0)

< 0.001

Respiratory disease

2168 (7.1)

517 (8.5)

0.001

Hepatic disease

1386 (4.5)

382 (6.3)

< 0.001

Cancer

7711 (25.1)

1545 (25.4)

0.47

Endotracheal intubation

418 (1.4)

515 (8.5)

< 0.001

Use of vasopressors

1223 (4.0)

1105 (18.1)

< 0.001

Symptom< 0.001

Chest pain

4871 (15.9)

1288 (21.1)

 

Dyspnea

4589 (14.9)

1505 (24.7)

 

Dysuria or urologic symptom

99 (0.3)

26 (0.4)

 

Febrile symptom

1711 (5.6)

446 (7.3)

 

General weakness

481 (1.6)

129 (2.1)

 

Gastrointestinal symptom

3846 (12.5)

437 (7.2)

 

Miscellaneous

120 (0.4)

1 (0.0)

 

Neurologic symptom

2072 (6.7)

532 (8.7)

 

Non-cardiac chest pain

303 (1.0)

30 (0.5)

 

Not classified

8450 (27.5)

1313 (21.5)

 

Syncope or palpitation

3673 (12.0)

346 (5.7)

 

Trauma

498 (1.6)

40 (0.7)

 

Systolic blood pressure (mmHg)

131 (114–149)

127 (106–148)

< 0.001

Diastolic blood pressure (mmHg)

80 (70–90)

76 (65–88)

< 0.001

Heart rate (/min)

84 (72–99)

91 (76–111)

< 0.001

Mean arterial pressure ≤ 70 mmHg

1811 (6.0)

758 (12.6)

< 0.001

Heart rate > 100/min

7463 (24.6)

2283 (38.0)

< 0.001

White blood cell (× 103/mm3)

7.6 (5.9–10.1)

9.0 (6.7–12.7)

< 0.001

Hemoglobin (g/dL)

13.2 (11.6–14.6)

12.4 (10.6–14.1)

< 0.001

Platelet (× 103/mm3)

213 (168–260)

196 (145–250)

< 0.001

Creatinine (mg/dL)

0.80 (0.65–0.99)

1.02 (0.78–1.59)

< 0.001

c-reactive protein (mg/dL)

0.22 (0.05–2.02)

1.24 (0.18–7.42)

< 0.001

Frequency of cTnI test within 24 h

1 (1–1)

1 (1–2)

< 0.001

  1. Data are shown as the median with interquartile range or frequency with %. cTnI cardiac troponin I, ULN upper limit of normal. Positive or negative cTnI were defined as cTnI of ≥ × 1 ULN or < × 1 ULN (< 0.040 ng/ml), respectively. Mean arterial pressure was calculated using the following formula: (systolic blood pressure + 2 × diastolic blood pressure)/3).
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