Name
totalhrs
Label
B6. Total recording period (hours)
Units
hours
Type
integer
A4b. Visit of Sleep Study vs B6. Total recording period (hours)
N Mean StdDev Median Min Max Unknown Total
Visit 1 3,012 7.4 ± 1.7 8.0 2.0 12.0 - 3,012
Visit 3 2,332 7.1 ± 1.7 7.0 2.0 13.0 - 2,332
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs B6. Total recording period (hours)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,012 7.4 ± 1.7 8.0 2.0 12.0 - 3,012
Non-Hispanic White 1,842 7.4 ± 1.6 8.0 2.0 12.0 - 1,842
Non-Hispanic Black 359 7.2 ± 2.0 7.0 2.0 12.0 - 359
Hispanic 557 7.5 ± 1.8 8.0 2.0 12.0 - 557
Asian 112 7.6 ± 1.4 7.5 2.0 11.0 - 112
Other 142 7.4 ± 1.8 8.0 2.0 11.0 - 142
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs B6. Total recording period (hours)
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 2,332 7.1 ± 1.7 7.0 2.0 13.0 - 2,332
Non-Hispanic White 1,494 7.1 ± 1.7 7.0 2.0 12.0 - 1,494
Non-Hispanic Black 247 7.1 ± 1.8 7.0 2.0 11.0 - 247
Hispanic 397 7.2 ± 1.7 7.0 2.0 13.0 - 397
Asian 84 7.0 ± 1.7 7.0 2.0 11.0 - 84
Other 110 7.2 ± 1.7 7.0 3.0 11.0 - 110