Table 1 Comparison of study sample characteristics to clinical echo database

From: Fast and accurate view classification of echocardiograms using deep learning

Demographics

Study sample

Clinical Echo Database a

 
 

Mean

SD

IQR

Mean

SD

IQR

p-valueb

Age (years)

56.1

16.6

22.5

58.5

16.8

23.0

0.5

Height (cm)

170

11.6

16.5

169

11.0

17.8

0.8

Weight (kg)

77.0

20.5

31.5

77.0

22.0

26.3

0.9

Systolic BP (mmHg)

127

19.0

20.3

126

22.0

28.0

1.0

Diastolic BP (mmHg)

70.0

123

13.3

70.0

12.0

17.0

0.5

MAP (mmHg)

88.9

13.4

18.3

88.6

13.9

13.8

0.7

BSA (m2)

1.87

0.27

0.44

1.82

0.56

0.37

0.8

BMI (kg/m2)

26.6

6.10

10.2

27.1

6.80

7.40

0.9

Demographics

Percent

N

Sample size

Percent

N

Sample size

p-valuec

Female

50.6

135

267

49.5

79,460

159,503

0.7

Male

49.4

132

267

50.5

80,043

159,503

0.7

Obese

25.8

69

267

25.1

25,770

102,669

0.8

Pathology

Percent

N

Sample size

Percent

N

Sample size

p-valuec

LVMI > normal (adjusted for sex)

32.8

67

204

39.2

34,056

86,878

0.06

LVEF < 55%

21.7

58

267

20.3

18,432

90,798

0.6

LVEDVI > normal (adjusted for sex)

16.9

45

238

46.8

10,677

90,375

0.3

RVSP > 40 mmHg

10.9

29

267

14.6

10,774

73,795

0.09

TAPSE < 1.6 cm

7.84

8

102

10.6

1768

16,679

0.4

  1. BP blood pressure, MAP mean arterial pressure, BSA body surface area, BMI body mass index, LVMI left ventricular mass index (g/m2), LVEF left ventricular ejection fraction, LVEDVI left ventricular end-diastolic volume index (ml/m2), RVSP right ventricular systolic pressure, TAPSE tricuspid annular plane systolic excursion, SD standard deviation, IQR interquartile range
  2. a Ns and sample size vary according to availability of different measurements
  3. b Two-tailed Student’s t-test, unequal variance
  4. c Chi-squared test for comparison of proportions