Cleveland Family Study

/datasets/cfs/variables/v4rpa /datasets/cfs/variables/v4sa

V4: Duration of the secondary R-wave

Units milliseconds
Type numeric

Visit vs V4: Duration of the secondary R-wave

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 1.6 ± 6.4 0.0 0.0 62.0 3 735

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 1.6 ± 6.5 0.0 0.0 62.0 3 658
5-14 yrs old 63 3.7 ± 8.7 0.0 0.0 33.0 1 64
15-24 yrs old 112 3.3 ± 9.1 0.0 0.0 45.0 - 112
25-34 yrs old 62 1.2 ± 5.4 0.0 0.0 26.0 - 62
35-44 years 97 0.6 ± 3.9 0.0 0.0 28.0 1 98
45-54 years 147 0.9 ± 5.1 0.0 0.0 35.0 1 148
55-64 years 84 1.6 ± 7.8 0.0 0.0 62.0 - 84
65-74 years 57 0.0 ± 0.0 0.0 0.0 0.0 - 57
75-84 years 31 1.3 ± 5.0 0.0 0.0 20.0 - 31
85 years or older 2 0.0 ± 0.0 0.0 0.0 0.0 - 2

Sex vs V4: Duration of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 1.6 ± 6.4 0.0 0.0 62.0 3 735
Female 404 1.0 ± 4.4 0.0 0.0 26.0 2 406
Male 328 2.4 ± 8.2 0.0 0.0 62.0 1 329

Race vs V4: Duration of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 1.6 ± 6.4 0.0 0.0 62.0 3 735
White 303 0.6 ± 3.6 0.0 0.0 31.0 1 304
Black 407 2.4 ± 7.9 0.0 0.0 62.0 2 409
Other 22 1.1 ± 5.1 0.0 0.0 24.0 - 22