Cleveland Family Study

/datasets/cfs/variables/irpa /datasets/cfs/variables/isa

Lead I: Duration of the secondary R-wave

Units milliseconds
Type numeric

Visit vs Lead I: Duration of the secondary R-wave

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 0.6 ± 3.7 0.0 0.0 33.0 3 735

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 0.5 ± 3.5 0.0 0.0 33.0 3 658
5-14 yrs old 63 0.7 ± 3.8 0.0 0.0 24.0 1 64
15-24 yrs old 112 0.8 ± 4.2 0.0 0.0 28.0 - 112
25-34 yrs old 62 1.0 ± 5.4 0.0 0.0 33.0 - 62
35-44 years 97 0.5 ± 3.5 0.0 0.0 28.0 1 98
45-54 years 147 0.4 ± 3.1 0.0 0.0 30.0 1 148
55-64 years 84 0.5 ± 3.0 0.0 0.0 23.0 - 84
65-74 years 57 0.3 ± 2.1 0.0 0.0 16.0 - 57
75-84 years 31 0.0 ± 0.0 0.0 0.0 0.0 - 31
85 years or older 2 0.0 ± 0.0 0.0 0.0 0.0 - 2

Sex vs Lead I: Duration of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 0.6 ± 3.7 0.0 0.0 33.0 3 735
Female 404 0.5 ± 3.4 0.0 0.0 28.0 2 406
Male 328 0.6 ± 4.0 0.0 0.0 33.0 1 329

Race vs Lead I: Duration of the secondary R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 0.6 ± 3.7 0.0 0.0 33.0 3 735
White 303 0.0 ± 0.0 0.0 0.0 0.0 1 304
Black 407 1.0 ± 4.8 0.0 0.0 33.0 2 409
Other 22 0.6 ± 3.0 0.0 0.0 14.0 - 22