Details of Element: Cholesterol-Grc (Mg)
Component of Medical Laboratory

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

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 5595 1589 7184
Number of Distinct Participants 1377 573 1950
Year First Collected 1959 1978 -
Year Last Collected 1992 1992 -

Type of Variable: Absolute Measure
Encoding: Continuous
Units of Measure: MG/DL
Precision: ###.
Anticipated Range: 150. thru 400.
Masterfile Index: 002-01-57
Related Data Elements: chomg0 , ccxch
Specific to this Data Element:
    Descriptive history:
    Cholesterols have been measured continuously since 1959. During this time, different methods and different laboratories have provided the cholesterol values. cholesterol-grc' refers to measurements made at the GRC (see description of cholesterol -bs' -- file 002, card 2 & ccx cholesterol' -- file 002, card 4). A brief chronology of the cholesterol-grc' measurement follows:

    Dates Sample Type Method
    1959 - 1982 serum Abell-Kendall
    1983 - 1987 serum Abbott
    1987 - 1992 plasma Abbott

    N.B. -- from 1991 to the present, cholesterol measurements have been measured in plasma using Abbott-CCX analyzer (see ccx cholesterol'-- file 002, card4)

    Cholesterol measurements made from different sample types and methodologies are not equivalent. The cholesterol-grc' 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 equivalency (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:

  • Hershcopf, R.J., Elahi, D., Andres, R., Baldwin, H.L., Raizes, G.S., Schocken, D.D., Tobin, J.D. Longitudinal changes in serum cholesterol in man: an epidemiologic search for an etiology. J Chronic Dis. 35(2): 101-14,1982.
  • Sorkin, J.D., Andres, R., Muller, D.C., Baldwin, H.L., Fleg, J.L. Cholesterol as a risk factor for coronary heart disease in elderly men. The Baltimore Longitudinal Study of Aging. Ann Epidemiol. 2(1-2): 59-67,1992.
  • 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 cholestrol. AmJ Clin Nutr. 60(1):100-5, 1994.
Details for this Data Type
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