Cleveland Family Study

/datasets/cfs/variables/iird /datasets/cfs/variables/iirpd

Lead II: Amplitude of the secondary R-wave

Units millimeters
Type numeric

Visit vs Lead II: Amplitude of the secondary R-wave

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 10.3 ± 68.2 0.0 0.0 1,118.0 3 735

Age at time of visit vs Lead II: Amplitude of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 11.3 ± 71.9 0.0 0.0 1,118.0 3 658
5-14 yrs old 63 18.7 ± 140.9 0.0 0.0 1,118.0 1 64
15-24 yrs old 112 3.0 ± 19.6 0.0 0.0 156.0 - 112
25-34 yrs old 62 7.4 ± 53.4 0.0 0.0 419.0 - 62
35-44 years 97 1.8 ± 12.2 0.0 0.0 92.0 1 98
45-54 years 147 17.0 ± 88.0 0.0 0.0 644.0 1 148
55-64 years 84 22.6 ± 85.2 0.0 0.0 507.0 - 84
65-74 years 57 7.8 ± 39.2 0.0 0.0 288.0 - 57
75-84 years 31 13.2 ± 46.5 0.0 0.0 224.0 - 31
85 years or older 2 0.0 ± 0.0 0.0 0.0 0.0 - 2

Sex vs Lead II: Amplitude of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 10.3 ± 68.2 0.0 0.0 1,118.0 3 735
Female 404 5.9 ± 46.1 0.0 0.0 507.0 2 406
Male 328 15.7 ± 87.9 0.0 0.0 1,118.0 1 329

Race vs Lead II: Amplitude of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 10.3 ± 68.2 0.0 0.0 1,118.0 3 735
White 303 11.7 ± 67.6 0.0 0.0 644.0 1 304
Black 407 9.7 ± 70.5 0.0 0.0 1,118.0 2 409
Other 22 0.0 ± 0.0 0.0 0.0 0.0 - 22