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. 2018 Mar 21;1:6. doi: 10.1038/s41746-017-0013-1

Table 1.

Comparison of study sample characteristics to clinical echo database

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

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

a Ns and sample size vary according to availability of different measurements

b Two-tailed Student’s t-test, unequal variance

c Chi-squared test for comparison of proportions