Cleveland Family Study

/datasets/cfs/variables/oldinfar /datasets/cfs/variables/prtaxes1

PR Interval

Units milliseconds
Type numeric

Visit vs PR Interval

N Mean StdDev Median Min Max Unknown Total
Visit 5 723 165.3 ± 26.7 164.0 100.0 340.0 12 735

Age at time of visit vs PR Interval

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 647 165.5 ± 27.2 164.0 100.0 340.0 11 658
5-14 yrs old 63 145.3 ± 18.8 144.0 104.0 192.0 1 64
15-24 yrs old 112 155.0 ± 20.8 156.0 100.0 228.0 - 112
25-34 yrs old 62 161.5 ± 25.2 158.0 128.0 268.0 - 62
35-44 years 98 163.6 ± 18.7 164.0 120.0 212.0 - 98
45-54 years 147 169.7 ± 25.4 168.0 108.0 256.0 1 148
55-64 years 82 171.5 ± 23.5 172.0 124.0 240.0 2 84
65-74 years 53 180.2 ± 35.8 176.0 104.0 340.0 4 57
75-84 years 29 199.0 ± 38.3 200.0 128.0 280.0 2 31
85 years or older 1 184.0 - 184.0 184.0 184.0 1 2

Sex vs PR Interval

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 723 165.3 ± 26.7 164.0 100.0 340.0 12 735
Female 403 164.0 ± 25.5 160.0 100.0 268.0 3 406
Male 320 167.0 ± 28.1 164.0 108.0 340.0 9 329

Race vs PR Interval

Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 723 165.3 ± 26.7 164.0 100.0 340.0 12 735
White 296 163.1 ± 24.9 160.0 108.0 284.0 8 304
Black 405 167.5 ± 27.5 164.0 104.0 340.0 4 409
Other 22 155.5 ± 29.7 148.0 100.0 248.0 - 22