Page Comparison

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Yes

Fields					Description	Required
Instrument					Holds information about the instrument (usually a questionnaire)	Yes
	InstrumentName				Instrument prefix	Yes
	Agency				The DDI agency identifier for the metadata e.g. uk.alspac, uk.cls.mcs	Yes
	InstrumentName				Title of the instrument	Yes
	InterviewerInstructionsScheme				Question intructioninstruction	No
		LiteralText			Instruction text	No
	ControlConstructScheme				Holds all constructs in order they appear in the questionnaire	Yes
		Sequence			Section of questionnaire which contains other control constructs	Yes
			ConstructName		Section headerYes
			ConstructLabel		Section header	Yes
		QuestionConstruct			Holds question construct label, position and interviewee	Yes
			ConstructName		Question construct label e.g. qc_1	Yes
			ConstructLabel		Question construct name e.g. 1	Yes
			ResponseUnit		The person answering the question	Yes
			ControlConstructReference		Reference to the question	Yes
		IfThenElse				No
			ConstructName		Condition label e.g. c_q1
			Description		Condition text
			Command
				ProgramLanguage	Program language logic is in
				CommandContent	Condition logic
		LoopWhile				YesNo
			ConstructName		Loop label e.g. l_q1
			Command
				ProgramLanguage	Program language logic is in
				CommandContent	Condition logic
		StatementItem				No
			ConstructName		Statement label e.g. s_q1
			LiteralText		Statement text
	QuestionScheme				Contains the question items	Yes
		QuestionItem			Single question	Yes
			QuestionItemName		Question item label e.g. qi_1	Yes
			LiteralText		Question text	Yes
			CodeDomain		Code list response domain	No
				CodeListReference	Reference to the code list
				ResponseCardinality	Number of options a respondent can select
			NumericDomain		Numeric response domain	No
				Label	Numeric response domain label
				NumericTypeCode	Type of numeric (float or interger)
				NumberRange	Min and max range
			TextDomain		Text response domain max lengthNo
				Label	Text response domain label
			DateTimeDomain		Date response domainNo
				Label	Date response domain label
				DateTypeCode	Date, time or duration
		QuestionGrid			Matrix of questions	No
			QuestionGridName		Question grid label e.g. qc_1
			LiteralText		Question text
			GridDimension		Contains the structure of the matrix and response domains
				CodeDomain	Code lists for X and Y axis
				StructuredMixedGridResponseDomain	Contains the response domains attached to the grid
	CategoryScheme					Yes
		CategoryName			ID of category (auto-generated)
		Label			Category text
	CodeList					Yes
		Label			Code list label
		Value			Code value	Version	Version number

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Old Version 13

New Version 14

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