Data Dictionary glossary

Variable name
As it appears on the LSAC dataset
Variable name without age
Useful for sorting together like variables from different waves and cohorts
Topic number
Allows derived items to be sorted in with the input variables them come from
Question id
(i.e. variable name without age or subject/informant)
Useful for checking which informats were asked each question at each Wave
Position in file order
Mainly useful for sorting questions back into file order (default option)
File
Which of the LSAC data files the variable is contained in: either lsacconf0, lsacconf2, lsacconf4, lsacconf6
Wave
Which wave (or waves) data was collected from for the variable
Cohort
Indicator of whether the question is asked for the B- or K-cohort
Questionnaire position
Location of question within questionnaires
Person label
Subject/Informant for the variable
Child's age
Age of child at time information is collected
Variable labels
Describes the question/item
Topics
The theme or content area
Construct
This is like a sub-topic, more specific than the topic. See list of topic contructs
Measure
Specific information on the measure that the variable is part of
Question
The actual wording of the question that appears in the LSAC instruments
Response categories
The actual wording of the response categories that appears in the LSAC instruments
Population
Which cases should have valid (non-missing) for the variable
SAS format
Format used in SAS to add value labels
Derived variable
Is a variable that has been generated/created from other information collected
Item type
This variable is designed to help users create customised lists of the variables for easier location of required variables. Fields have been classified into the following types:
  • Derived-compiles information from multiple input variables
  • Household - information on members off the study child's household
  • Input - variables as collected from questionnaire (can have limited alterations)
  • Linked - Census
  • Linked - NCAC
  • Mother/Father - variables converted from Parent 1/Parent 2
Notes
Any other information on the variable that data users should be aware of

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