Name
stdytype
Label
A4a. Type of Sleep Study
Domain
studytype
  • 1: Initial
  • 2: Re-do
Type
choices
A4a. Type of Sleep Study vs A4b. Visit of Sleep Study
Visit 1 Visit 3
Total 3,012 2,332
Initial 2,914 2,255
Re-do 98 77
A4a. Type of Sleep Study 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
Initial 1,784 349 538 107 136 2,914
Re-do 58 10 19 5 6 98
A4a. Type of Sleep Study 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
Initial 1,438 243 387 82 105 2,255
Re-do 56 4 10 2 5 77