Details of Element: Last Exam by Doctor Month
Component of Vision-Color-Tonography

Unique Name: lebdm
Contained in the Common BLSA Data Set ? Yes

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 4400 1429 5829
Number of Distinct Participants 1175 578 1753
Year First Collected 1964 1978 -
Year Last Collected 1992 1992 -

Type of Variable: Absolute Measure
Encoding: Discrete
    Value Meaning
    0 ?
    1 Jan
    2 Feb
    3 Mar
    4 Apr
    5 May
    6 Jun
    7 Jul
    8 Aug
    9 Sep
    10 Oct
    11 Nov
    12 Dec
Precision: ##.
Anticipated Range: 00. thru 12.
Masterfile Index: 611-01-07
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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Revised 09/18/98 -- Send comments to our Web Master .