Details of Element: Ccx High Density Lipoprotein
Component of Medical Laboratory

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

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 2020 1739 3759
Number of Distinct Participants 753 708 1461
Year First Collected 1991 1991 -
Year Last Collected 1998 1998 -

Type of Variable: Absolute Measure
Encoding: Continuous
Units of Measure: MG/DL
Precision: ###.
Anticipated Range: 015. thru 110.
Masterfile Index: 002-04-46
Related Data Elements: none
Specific to this Data Element:
    Inclusion/Exclusion Rules: n/a
    Descriptive History: (none) **pi Dr. Reubin Andres **fc Every visit. May 15, 1997

    Master File Documentation

    File Type: 002

    Card: 4

    Columns: 46-48

    Variable: ccx high density lipoprotein

    Clarification of data element descriptions:
    Units - OK; minimum = 79; maximum = 412

    Descriptive history:
    Cholesterols have been measured continuously since 1959. During this time, different methods and different laboratories have provided the cholesterol values. ccx cholesterol' refers to measurements made at the GRC using the Abbott CCX analyzer (see description of cholesterol -grc' -- file 001, card 1 & cholesterol-bs' -- file 002, card 2). From 1991 to the present, cholesterol has been measured in plasma using the Abbott CCX method.

    Other cholesterol measurements (see above) measured in different sample types and with different methodologies are not equivalent. The ccx cholesterol' values in this file are entered as is. Longitudinal and cross-sectional analyses made over time periods where changes occurred in the methodology require adjustment to achieve consistancy (for more information please contact investigators).

    Data collection methodology:
    Blood chemistry.

    Related protocols:
    Other blood chemistries.

    Investigators:
    Dr. Reubin Andres (primary investigator)
    GRC Box-24
    andresr@grc.nia.nih.gov
    (410)-558-8194

    Frequency of data collection:
    Every visit.

    Inclusion/exclusion rules:
    None.

    Publications using these data:

  • Hallfrisch, J., Singh, V.N., Muller, D.C., Baldwin, H., Bannon, M.E., Andres, R. High plasma vitamin C associated with high plasma HDL- and HDL2 cholesterol. Am J Clin Nutr. 60(1): 100-5,1994.
Details for this Data Type
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Revised 09/18/98 -- Send comments to our Web Master .