Yes |
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The affirmative response to a question. C49488 |
No |
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The non-affirmative response to a question. C49487 |
Unknown |
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Not known, observed, recorded; or reported as unknown by the data contributor. C17998 |
N/A or not reported |
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Determination of a value is not relevant in the current context.:An article used to connect words, phrases, or clauses representing alternatives; used to connect alternative terms for the same thing; used in correlation; used to correct or rephrase what was previously said; otherwise.:Not provided or available. C48660:C37998:C43234(Primary) |