Cleveland Family Study

/datasets/cfs/variables/iiqd /datasets/cfs/variables/iird

Lead II: Absolute amplitude of the R-wave

Units millimeters
Type numeric

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

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 972.0 ± 458.7 934.5 0.0 2,578.0 3 735

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 965.8 ± 467.0 927.0 0.0 2,578.0 3 658
5-14 yrs old 63 1,417.7 ± 519.6 1,494.0 34.0 2,246.0 1 64
15-24 yrs old 112 1,319.0 ± 437.4 1,208.0 585.0 2,578.0 - 112
25-34 yrs old 62 1,021.7 ± 372.7 986.0 29.0 1,909.0 - 62
35-44 years 97 888.7 ± 314.2 869.0 278.0 2,412.0 1 98
45-54 years 147 864.4 ± 366.3 820.0 19.0 2,055.0 1 148
55-64 years 84 736.6 ± 373.0 683.0 24.0 1,972.0 - 84
65-74 years 57 638.9 ± 322.7 576.0 24.0 1,269.0 - 57
75-84 years 31 617.9 ± 449.6 566.0 0.0 1,801.0 - 31
85 years or older 2 749.0 ± 438.4 749.0 439.0 1,059.0 - 2

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 972.0 ± 458.7 934.5 0.0 2,578.0 3 735
Female 404 1,003.0 ± 407.2 971.0 0.0 2,412.0 2 406
Male 328 933.8 ± 513.3 898.0 19.0 2,578.0 1 329

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 972.0 ± 458.7 934.5 0.0 2,578.0 3 735
White 303 858.1 ± 418.4 849.0 19.0 2,578.0 1 304
Black 407 1,043.9 ± 472.8 1,005.0 0.0 2,470.0 2 409
Other 22 1,209.0 ± 375.9 1,286.0 566.0 1,752.0 - 22