Details of Element: How Long Short of Breath
Component of Pulmonary Disease Questionnaire

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

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 6763 3563 10326
Number of Distinct Participants 1232 905 2137
Year First Collected 1959 1978 -
Year Last Collected 1998 1998 -

Type of Variable: Absolute Measure
Encoding: Discrete
    Value Meaning
    0 Does not apply
    1 less 1 yr
    2 1-2 yrs
    3 2-5 yrs
    4 > 5 yrs
Precision: #.
Anticipated Range: 0. thru 4.
Masterfile Index: 113-01-28
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 .