Details of Element: Source of Diagnosis
Component of Diagnoses


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

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 49246 35149 84395
Number of Distinct Participants 819 752 1571
Year First Collected 1986 1986 -
Year Last Collected 1998 1998 -

Type of Variable: Absolute Measure
Encoding: Discrete
    Value Meaning
    1 History
    2 Lab
    3 History+lab
    4 Physical
    5 History+physical
    6 Lab+physical
    7 History+lab+physical
Precision: #.
Anticipated Range: 1. thru 7.
Masterfile Index: 003-01-19
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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