Details of Element: Percent Grade
Component of Rayfield V02


Unique Name: pergr15
Contained in the Common BLSA Data Set ? No

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 714 744 1458
Number of Distinct Participants 512 544 1056
Year First Collected 1968 1978 -
Year Last Collected 1998 1998 -

Type of Variable: Absolute Measure
Encoding: Continuous
Units of Measure: (undeclared)
Precision: ##.
Anticipated Range: 12. thru 12.
Masterfile Index: 144-06-38
Related Data Elements: none
Specific to this Data Element:
    Inclusion/Exclusion Rules: n/a
    Descriptive History: (none)
Details for this Data Type


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