Histogram

Subject race vs A4b. Visit of Sleep Study
Visit 1 Visit 3
Total 3,012 -
white 1,842 -
american indian or alaska native - -
black or african american 359 -
asian 112 -
native hawaiian or other pacific islander - -
hispanic 557 -
multiple - -
other 142 -
unknown - -
not reported - -
not allowed to collect - -