Name
ekghrs
Label
B7a. EKG (hours usable)
Units
hours
Type
integer
A4b. Visit of Sleep Study vs B7a. EKG (hours usable)
N Mean StdDev Median Min Max Unknown Total
Visit 1 3,012 7.1 ± 1.9 7.0 0.0 12.0 - 3,012
Visit 3 2,332 6.9 ± 1.9 7.0 0.0 13.0 - 2,332
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs B7a. EKG (hours usable)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,012 7.1 ± 1.9 7.0 0.0 12.0 - 3,012
Non-Hispanic White 1,842 7.2 ± 1.8 7.0 0.0 12.0 - 1,842
Non-Hispanic Black 359 6.8 ± 2.2 7.0 0.0 12.0 - 359
Hispanic 557 7.2 ± 2.0 7.0 0.0 12.0 - 557
Asian 112 7.3 ± 1.7 7.0 0.0 11.0 - 112
Other 142 7.2 ± 1.9 7.0 0.0 11.0 - 142
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs B7a. EKG (hours usable)
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 2,332 6.9 ± 1.9 7.0 0.0 13.0 - 2,332
Non-Hispanic White 1,494 6.9 ± 1.8 7.0 0.0 12.0 - 1,494
Non-Hispanic Black 247 6.8 ± 2.0 7.0 0.0 11.0 - 247
Hispanic 397 6.9 ± 2.0 7.0 0.0 13.0 - 397
Asian 84 6.9 ± 1.8 7.0 1.0 11.0 - 84
Other 110 7.0 ± 2.0 7.0 0.0 11.0 - 110