Table 1 Baseline characteristics

Age—year*

63 ± 22

55 ± 18

0.301

Female—n (%)^†

10 (66.7)

11 (73.3)

1

Weight—kilogram*

55 ± 15

64 ± 14

0.090

Co-morbidity—n (%)^†

Hypertension

5 (33.3)

8 (53.3)

0.462

Dyslipidemia

4 (26.7)

6 (40)

0.7

Chronic kidney disease

3 (20)

4 (26.7)

1

Hypothyroidism

2 (13.3)

0

0.483

Thyrotoxicosis/hyperthyroidism

1 (6.7)

2 (13.3)

1

Atrial fibrillation

1 (6.7)

2 (13.3)

1

Valvular heart disease

1 (6.7)

1 (6.7)

1

Coronary artery disease

1 (6.7)

0

1

Diabetes

1 (6.7)

3 (20)

0.598

Heart failure

0

1 (6.7)

1

Stroke

0

1 (6.7)

1

Others

5 (33.3)

7 (46.7)

0.71

None

4 (26.7)

3 (20)

1

Alcohol drinker—n (%)^†

4 (26.7)

2 (13.3)

0.651

Smoker—n (%)^†

3 (20)

2 (13.3)

1

Clinical presentation—n (%)^†

Palpitation

15 (100)

12 (80)

0.224

Dyspnea

3 (20)

2 (13.3)

1

Chest pain

2 (13.3)

4 (26.7)

0.651

Syncope

1 (6.7)

0

1

Abdominal Pain

0

1 (6.7)

1

Fever

0

1 (6.7)

1

Nausea, vomiting

0

1 (6.7)

1

Diarrhea

0

1 (6.7)

1

Current medications—n (%)^†

Antihypertensive

7 (46.7)

8 (53.3)

1

Lipid lowering

4 (26.7)

6 (40)

0.7

Antidiabetic

1 (6.7)

3 (20)

0.598

Anticoagulant

2 (13.3)

1 (6.7)

1

Antiarrhythmic

1 (6.7)

5 (33.3)

0.169

Antiplatelet

1 (6.7)

0

1

Antithyroid

1 (6.7)

0

1

Disposition from the ED—n (%)^†

Discharge

14 (93.3)

7 (46.7)

0.014

Admission

1 (6.7)

8 (53.3)

ED LOS—minute*

151 ± 64

230 ± 97

0.014