Cleveland Family Study

/datasets/cfs/variables/v4rd /datasets/cfs/variables/v4rpd

V4: Amplitude of the secondary R-wave

Units millimeters
Type numeric

Visit vs V4: Amplitude of the secondary R-wave

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 8.8 ± 37.7 0.0 0.0 302.0 3 735

Age at time of visit vs V4: Amplitude of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 8.6 ± 37.5 0.0 0.0 302.0 3 658
5-14 yrs old 63 21.0 ± 51.5 0.0 0.0 209.0 1 64
15-24 yrs old 112 21.8 ± 65.9 0.0 0.0 302.0 - 112
25-34 yrs old 62 5.6 ± 25.5 0.0 0.0 141.0 - 62
35-44 years 97 3.2 ± 22.6 0.0 0.0 190.0 1 98
45-54 years 147 3.8 ± 21.5 0.0 0.0 180.0 1 148
55-64 years 84 5.7 ± 27.1 0.0 0.0 209.0 - 84
65-74 years 57 0.0 ± 0.0 0.0 0.0 0.0 - 57
75-84 years 31 5.6 ± 22.4 0.0 0.0 107.0 - 31
85 years or older 2 0.0 ± 0.0 0.0 0.0 0.0 - 2

Sex vs V4: Amplitude of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 8.8 ± 37.7 0.0 0.0 302.0 3 735
Female 404 4.4 ± 21.2 0.0 0.0 146.0 2 406
Male 328 14.2 ± 50.6 0.0 0.0 302.0 1 329

Race vs V4: Amplitude of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 8.8 ± 37.7 0.0 0.0 302.0 3 735
White 303 3.0 ± 20.5 0.0 0.0 209.0 1 304
Black 407 13.3 ± 46.4 0.0 0.0 302.0 2 409
Other 22 6.0 ± 27.9 0.0 0.0 131.0 - 22