Cleveland Family Study

/datasets/cfs/variables/iirpa /datasets/cfs/variables/iisa

Lead II: Duration of the secondary R-wave

Units milliseconds
Type numeric

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

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 1.4 ± 6.9 0.0 0.0 66.0 3 735

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 1.5 ± 7.3 0.0 0.0 66.0 3 658
5-14 yrs old 63 0.9 ± 4.9 0.0 0.0 33.0 1 64
15-24 yrs old 112 0.6 ± 3.8 0.0 0.0 29.0 - 112
25-34 yrs old 62 0.7 ± 4.0 0.0 0.0 27.0 - 62
35-44 years 97 0.4 ± 2.8 0.0 0.0 20.0 1 98
45-54 years 147 1.9 ± 7.8 0.0 0.0 59.0 1 148
55-64 years 84 4.1 ± 13.0 0.0 0.0 66.0 - 84
65-74 years 57 2.2 ± 9.3 0.0 0.0 62.0 - 57
75-84 years 31 1.8 ± 6.2 0.0 0.0 30.0 - 31
85 years or older 2 0.0 ± 0.0 0.0 0.0 0.0 - 2

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 1.4 ± 6.9 0.0 0.0 66.0 3 735
Female 404 0.9 ± 5.5 0.0 0.0 59.0 2 406
Male 328 2.0 ± 8.2 0.0 0.0 66.0 1 329

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 1.4 ± 6.9 0.0 0.0 66.0 3 735
White 303 1.7 ± 8.3 0.0 0.0 66.0 1 304
Black 407 1.3 ± 5.9 0.0 0.0 59.0 2 409
Other 22 0.0 ± 0.0 0.0 0.0 0.0 - 22