Details of Element: Reason for Form Not Being Filled Out
Component of Personal Smoking History


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

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 2419 104 2523
Number of Distinct Participants 784 87 871
Year First Collected 1958 1978 -
Year Last Collected 1998 1998 -

Type of Variable: Absolute Measure
Encoding: Discrete
    Value Meaning
    3 No change from earlier visit
    4 Omitted
    5 Incorrectly filled out
Precision: #.
Anticipated Range: 3. thru 5.
Masterfile Index: 409-01-56
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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