Cleveland Family Study

/datasets/cfs/variables/iqd /datasets/cfs/variables/ird

Lead I: Absolute amplitude of the R-wave

Units millimeters
Type numeric

Visit vs Lead I: Absolute amplitude of the R-wave

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 795.4 ± 340.3 751.0 83.0 2,202.0 3 735

Age at time of visit vs Lead I: Absolute amplitude of the R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 796.7 ± 344.0 751.0 83.0 2,202.0 3 658
5-14 yrs old 63 801.0 ± 415.6 722.0 122.0 2,153.0 1 64
15-24 yrs old 112 731.8 ± 346.5 653.5 229.0 2,202.0 - 112
25-34 yrs old 62 713.1 ± 304.3 695.5 83.0 1,357.0 - 62
35-44 years 97 842.1 ± 377.5 805.0 126.0 1,860.0 1 98
45-54 years 147 824.5 ± 301.9 844.0 131.0 1,875.0 1 148
55-64 years 84 815.8 ± 303.1 793.0 229.0 1,787.0 - 84
65-74 years 57 797.6 ± 324.4 805.0 185.0 1,503.0 - 57
75-84 years 31 884.5 ± 423.3 742.0 283.0 1,860.0 - 31
85 years or older 2 448.5 ± 255.3 448.5 268.0 629.0 - 2

Sex vs Lead I: Absolute amplitude of the R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 795.4 ± 340.3 751.0 83.0 2,202.0 3 735
Female 404 795.3 ± 351.9 747.0 126.0 2,011.0 2 406
Male 328 795.6 ± 325.9 756.0 83.0 2,202.0 1 329

Race vs Lead I: Absolute amplitude of the R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 795.4 ± 340.3 751.0 83.0 2,202.0 3 735
White 303 731.6 ± 307.8 708.0 126.0 2,202.0 1 304
Black 407 845.7 ± 354.1 810.0 83.0 2,153.0 2 409
Other 22 745.8 ± 364.8 629.5 161.0 1,508.0 - 22