Details of Element: Sodium Excretion (Meq/24 Hr)
Component of Body Composition

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

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 2530 585 3115
Number of Distinct Participants 865 371 1236
Year First Collected 1970 1978 -
Year Last Collected 1984 1984 -

Type of Variable: Absolute Measure
Encoding: Continuous
Units of Measure: meq/24 hrs
Precision: ###.#
Anticipated Range: 025.0 thru 400.0
Masterfile Index: 161-01-29
Related Data Elements: none
Specific to this Data Element:
    Descriptive history:
    Sodium excretion was measured in BLSA men from 1973 to 1984 and in BLSA women from 1978 to 1984. Flame photometry was used to assess the sodium concentration in an aliquot of the 24 hour urine collection. Sodium excretion is a marker for sodium intake.

    Data collection methodology:
    24 hour urine, flame photometry.

    Related protocols:
    Dietary intake, anthropometry

    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:
Details for this Data Type
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Revised 09/18/98 -- Send comments to our Web Master .