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HARMONIZED DATA

Label:r9semidone
Description:r9semidone:w9 whether r completed full 10 sec semi-tandem test
Item type:Constructed variable
Answer type:Enumerated
Answer choices: 0.no ; 1.yes ; .m:Missing ; .n:Not willing/able ; .r:Refuse ; .s:Skipped ; .x:Tried but was unable
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