Cleveland Family Study

/datasets/cfs/variables/iira /datasets/cfs/variables/iirpa

Lead II: Duration of the R-wave

Units milliseconds
Type numeric

Visit vs Lead II: Duration of the R-wave

N Mean StdDev Median Min Max Unknown Total
Visit 5 732 63.1 ± 19.7 61.0 0.0 128.0 3 735

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

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 62.9 ± 19.8 60.0 0.0 128.0 3 658
5-14 yrs old 63 59.3 ± 19.8 56.0 20.0 104.0 1 64
15-24 yrs old 112 62.9 ± 17.3 61.5 34.0 108.0 - 112
25-34 yrs old 62 63.3 ± 18.5 64.0 20.0 104.0 - 62
35-44 years 97 68.1 ± 18.1 67.0 29.0 120.0 1 98
45-54 years 147 63.0 ± 19.1 61.0 12.0 100.0 1 148
55-64 years 84 62.6 ± 21.7 59.0 10.0 128.0 - 84
65-74 years 57 59.5 ± 21.0 57.0 14.0 122.0 - 57
75-84 years 31 59.0 ± 28.5 55.0 0.0 128.0 - 31
85 years or older 2 65.5 ± 37.5 65.5 39.0 92.0 - 2

Sex vs Lead II: Duration of the R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 63.1 ± 19.7 61.0 0.0 128.0 3 735
Female 404 63.2 ± 18.1 64.0 0.0 128.0 2 406
Male 328 63.0 ± 21.5 59.0 10.0 128.0 1 329

Race vs Lead II: Duration of the R-wave

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 63.1 ± 19.7 61.0 0.0 128.0 3 735
White 303 59.3 ± 19.1 57.0 10.0 128.0 1 304
Black 407 65.6 ± 19.8 66.0 0.0 128.0 2 409
Other 22 68.9 ± 16.7 70.5 43.0 108.0 - 22