Optional
_Optional
_Number of participants with known results for measured variables
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_Cumulative number of participants
Optional
_Number of contributing studies
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descriptionTextual description of sample size for statistic
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extensionAdditional content defined by implementations
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idUnique id for inter-element referencing
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knownNumber of participants with known results for measured variables
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modifierExtensions that cannot be ignored even if unrecognized
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noteFootnote or explanatory note about the sample size
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numberCumulative number of participants
Optional
numberNumber of contributing studies
Textual description of sample size for statistic