Name
flowlimit
Label
B12. Flow Limitation Code
Domain
snoringflowlimit
  • 1: <25% of estimated sleep time
  • 2: 25-49% of estimated sleep time
  • 3: 50-74% of estimated sleep time
  • 4: >75% of estimated sleep time
Type
choices
B12. Flow Limitation Code vs A4b. Visit of Sleep Study
Visit 1 Visit 3
Total 3,012 2,332
<25% of estimated sleep time 2,404 2,020
25-49% of estimated sleep time 277 164
50-74% of estimated sleep time 177 76
>75% of estimated sleep time 154 71
Unknown - 1
B12. Flow Limitation Code vs Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g
Visit 1
Non-Hispanic White Non-Hispanic Black Hispanic Asian Other Total
Total 1,842 359 557 112 142 3,012
<25% of estimated sleep time 1,454 296 442 93 119 2,404
25-49% of estimated sleep time 168 34 57 10 8 277
50-74% of estimated sleep time 111 15 31 7 13 177
>75% of estimated sleep time 109 14 27 2 2 154
B12. Flow Limitation Code vs Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g
Visit 3
Non-Hispanic White Non-Hispanic Black Hispanic Asian Other Total
Total 1,494 247 397 84 110 2,332
<25% of estimated sleep time 1,283 226 344 73 94 2,020
25-49% of estimated sleep time 110 12 25 9 8 164
50-74% of estimated sleep time 46 3 20 2 5 76
>75% of estimated sleep time 55 5 8 - 3 71
Unknown - 1 - - - 1