Table 1.
Baseline characteristics.
Variable | Consented patients (N=110) | Eligible patients (no consent) (N=797) | P valuea | ||||||
Hospital presentation randomization group, n (%) | .62 | ||||||||
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Stable coronary artery disease | 33 (30) | 214 (26.8) |
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Unstable angina or non-STEMIb | 57 (51.8) | 409 (51.3) |
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STEMI | 20 (18.2) | 174 (21.8) |
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Sex, n (%) | .06 | ||||||||
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Male | 91 (82.7) | 594 (74.5) |
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Female | 19 (17.2) | 203 (25.5) |
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Age (years) | |||||||||
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At randomization | .006 | |||||||
|
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Value, mean (SD) | 65.3 (9.0) | 62.5 (11.0) |
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Value, median (IQR) | 65 (47-87) | 62 (28-95) |
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Men | <.001 | |||||||
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Value, mean (SD) | 65.6 (8.9) | 61.2 (10.5) |
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Value, median (IQR) | 65 (47-87) | 61 (28-95) |
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Women | .38 | |||||||
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Value, mean (SD) | 64.1 (9.5) | 66.3 (11.7) |
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Value, median (IQR) | 65 (47-81) | 68 (36-95) |
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Ethnicity, n (%) | .19 | ||||||||
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White | 99 (90) | 657 (82.4) |
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Asian | 3 (2.7) | 27 (3.4) |
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African American | 1 (0.9) | 37 (4.6) |
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Hispanic or Latino | 0 (0) | 14 (1.7) |
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Other | 7 (6.4) | 62 (7.8) |
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Country, n (%) | .61 | ||||||||
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Canada | 23 (20.9) | 184 (23.1) |
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United States | 87 (79.1) | 613 (76.9) |
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BMI (kg/m2), n (%) | .18 | ||||||||
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<25 | 19 (17.3) | 124 (15.6) |
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25-30 | 49 (44.5) | 307 (38.5) |
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≥30 | 42 (38.2) | 363 (45.5) |
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Diabetes, n (%) | 21 (19.1) | 237 (29.7) | .02 | ||||||
Hypertension, n (%) | 74 (67.2) | 554 (69.5) | .63 | ||||||
Dyslipidemia, n (%) | 77 (70) | 540 (67.8) | .64 | ||||||
Any history of heart failure, n (%) | 2 (1.8) | 28 (3.5) | .35 | ||||||
Heart failure >2 weeks, n (%) | 1 (0.9) | 24 (3) | .21 | ||||||
Estimated glomerular filtration rate (modification of diet in renal disease) <60, n (%) | 14 (12.7) | 91 (11.4) | .61 | ||||||
Cigarette use, n (%) | 7 (6.4) | 198 (24.8) | <.001 | ||||||
History of myocardial infarction (excluding index event), n (%) | 14 (12.7) | 136 (17.1) | .25 | ||||||
Peripheral artery disease, n (%) | 3 (2.7) | 33 (4.1) | .48 | ||||||
History of percutaneous coronary intervention, n (%) | 27 (24.5) | 220 (27.6) | .50 | ||||||
History of coronary artery bypass grafting, n (%) | 11 (10) | 75 (9.4) | .84 | ||||||
Stroke or transient ischemic attack, n (%) | 2 (1.8) | 26 (3.3) | .41 | ||||||
Family history of coronary artery disease, n (%) | 61 (55.4) | 413 (51.8) | .48 | ||||||
Chronic lung disease, n (%) | 4 (3.6) | 42 (5.3) | .46 | ||||||
Currently on dialysis, n (%) | 0 (0) | 1 (0.1) | .71 | ||||||
Education and computer literacy form completed, n (%) | <.001 | ||||||||
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Completed the form | 106 (96.4) | 637 (79.9) |
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Did not complete the form | 4 (3.6) | 160 (20.1) |
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Education level | <.001 | |||||||
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Less than high school | 2 (1.9) | 39 (6.1) |
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High school graduate or some college | 25 (23.5) | 274 (43) |
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Associate or bachelor’s degree | 50 (47.2) | 164 (25.7) |
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Graduate or PhD | 25 (23.6) | 75 (11.7) |
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Prefer not to answer | 4 (3.8) | 85 (13.4) |
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Frequency of internet use | <.001 | |||||||
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Does not use | 2 (1.9) | 76 (11.8) |
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About daily | 96 (90.5) | 397 (62.3) |
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About once a week | 2 (1.9) | 46 (7.2) |
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Occasionally (less than once a week) | 5 (4.7) | 44 (6.9) |
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Do not know | 0 (0) | 2 (0) |
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Prefer not to answer | 1 (0.9) | 72 (11.3) |
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Has a computer or laptop | 95 (93) | 423 (88) | .17 | |||||
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Has a smartphone | 99 (98) | 404 (86) | <.001 | |||||
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Has a tablet | 45 (49) | 204 (46) | .63 | |||||
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Has a smart speaker | 26 (31) | 74 (19) | .02 | |||||
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Has downloaded app to phone | 93 (94) | 326 (81) | .006 |
aComparison of consented and nonconsented patients.
bSTEMI: ST-elevation myocardial infarction.