Table 1 Patient-level study demographics stratified by presence of at least one abnormal serum troponin I value (defined as ≥ 0.02 µg/L).

From: Deep learning augmented ECG analysis to identify biomarker-defined myocardial injury

Serum troponin I concentration

 

 < 0.02 µg/L

 ≥ 0.02 µg/L

p value

Total

Sex—no. (%)

 Female

9956 (62.6)

5947 (37.4)

 < 0.001*

15,903 (49.0)

 Male

9321 (56.3)

7245 (43.7)

 

16,566 (51.0)

Race/ethnicity—no. (%)

 White

8489 (61.0)

5418 (39.0)

 < 0.001*

13,907 (42.8)

 Black

1973 (56.9)

1496 (43.1)

0.003*

3469 (10.7)

 Asian/Pacific Islander

2058 (59.6)

1394 (40.4)

0.768

3452 (10.6)

 Hispanic

1232 (66.8)

611 (33.2)

 < 0.001*

1843 (5.7)

 Native American

33 (60.0)

22 (40.0)

0.924

55 (0.2)

 Other/unknown

5498 (56.4)

4255 (43.6)

 < 0.001*

9753 (30)

Age

 Mean (± SD)

59.8 (16.9)

66.9 (16.6)

 < 0.001*

62.6 (17.2)

 Median

60

68

 

63

Total—no. (%)

19,283 (59.3)

13,196 (40.6)

 

32,479

  1. ± SD indicates standard deviation. P values calculated from χ2 test for categorical variables and 1-way analysis of variance testing for continuous variables.
  2. *Indicates statistical significance.