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That stands for not applicable.
The largest amount, about $2 million, came from people who list NA, presumably for not applicable, in the space where they would normally list a state.
'-' stands for Not Applicable.
Consequently an additional missing value option for ' not applicable' was included in the postal versions to reduce the chances of a respondent assigning a mid-range score to a ' not applicable' rating.
As numbers for not applicable options were high in the ThyDQoL (0% for family to 45% for depression) they were coded as zero for factor and reliability analyses but as not applicable for calculation of the AWI-18 and AWI-14.
For example, one question asked: "Do you agree that patients must give written informed consent when they participate in clinical trials?" The respondent could choose: 1 for completely disagree, 2 for disagree, 3 for neither agree nor disagree, 4 for agree, 5 for fully agree, and 0 for not applicable, or other response which was then elaborated by the respondent.
Similar(54)
f95% confidence interval and P value for AP not applicable because of the negative estimate (antagonistic rather than synergistic).
NSA, no samples available for testing; NA, not applicable for use in vaccine; BHG, bar-headed goose; JWE, Japanese white-eye.
All three reviewers selected "Yes" for 18 studies, "Unclear" for 5 studies and "Not Applicable" for 5 studies.
Furthermore, being a retrospective study, patients' consents for participation and for publication were not applicable.
However, this requirement is not applicable for many applications such as telecommunication.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com