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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Am J Cardiol. 2019 Oct 10;125(1):55–62. doi: 10.1016/j.amjcard.2019.09.032

Table 1.

Baseline Participant Characteristics in the Multi-Ethnic Study of Atherosclerosis by Incident Atrial Fibrillation within Five Years

Atrial Fibrillation

Variables No
(n = 3410)
Yes
(n = 124)
P
Value

Age (years) 60.9 (10.0) 70.9 (7.3) <0.001
Men 1646 (48%) 70 (56%) 0.09
Non-Hispanic white 1311 (38%) 59 (48%)
Chinese American
Non-Hispanic black
524 (15%)
762 (22%)
14 (11%)
25 (20%)
0.21
Non-Hispanic black 762 (22%) 25 (20%)
Hispanic 813 (24%) 26 (21%)
Current smoker 416 (12%) 17 (14%) 0.72
Body mass index (kg/m2) 27.5 (4.9) 28.0 (4.8) 0.36
Systolic blood pressure (mm Hg) 124.8 (21.1) 133.3 (21.1) <0.001
Diastolic blood pressure (mm Hg) 71.8 (10.2) 71.2 (10.4) 0.51
Pulse pressure (mm Hg) 53.0 (16.6) 62.1 (17.4) <0.001
Antihypertensive medication use 1118 (33%) 64 (52%) <0.001
Diabetes mellitus 380 (11%) 13 (10%) 0.93
Coronary artery calcium (Agatston units)
  0 1812 (53%) 32 (26%) <0.001
  1–99 885 (26%) 39 (31%)
  100–399 438 (13%) 25 (20%)
  400+ 275 (8%) 28 (23%)
Ankle-brachial index 1.12 (0.11) 1.09 (0.16) 0.002
Common carotid intima-media thickness (mm) 0.85 (0.18) 0.95 (0.21) <0.001
Internal carotid intima-media thickness (mm) 1.02 (0.56) 1.27 (0.75) <0.001
Serum creatinine (mg/dL) 0.96 (0.24) 1.04 (0.29) <0.001
N-terminal pro-B-type natriuretic peptide (pg/mL) 50.1 [22.0, 97.6] 106.9 [51.3, 233.5] <0.001
Detectable cardiac troponin-T 34 (1%) 5 (4%) 0.006
R amplitude in lead V4 (uV) 1429.8 (545.5) 1478.5 (660.3) 0.33
STJ amplitude in lead V5 (uV) 18.5 (35.3) 8.37 (42.56) 0.002
Heart rate (beats per minute) 62.7 (9.1) 62.3 (10.7) 0.64
Heart rate variability (ms) 22.6 (16.0) 20.2 (15.2) 0.10
QRS axis (degrees) 21.9 (31.4) 12.1 (31.2) 0.001
End-systolic basal superior lateral wall thickness (mm) 15.6 (3.0) 16.4 (3.4) 0.003
End-systolic mid-ventricular anterior wall thickness (mm) 15.9 (3.1) 17.3 (3.7) <0.001

Values are mean (standard deviation), median [interquartile range]