Details of Element: q (Quality Code)
Component of Pulmonary Function-Hopkins Review

Unique Name: qquco0
Contained in the Common BLSA Data Set ? No

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 4538 0 4538
Number of Distinct Participants 1005 0 1005
Year First Collected 1962 n/a -
Year Last Collected 1977 n/a -

Type of Variable: Absolute Measure
Encoding: Discrete
    Value Meaning
    1 At least 6 sec., smooth tracing & cont. transition
    2 At least 6 sec., irreg. tracing & cont. transition
    3 At least 6 sec., irreg. tracing & abrupt transition
    4 Less than 6 sec., smooth tracing & cont. transition
    5 Less than 6 sec., irreg. tracing & cont. transition
    6 Less than 6 sec., irreg. tracing & abrupt transition
Precision: #.
Anticipated Range: 1. thru 6.
Masterfile Index: 117-02-25
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 .