Details of Element: Sample 1
Component of Ivgtt

Unique Name: sam1q
Contained in the Common BLSA Data Set ? Yes

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 1221 0 1221
Number of Distinct Participants 766 0 766
Year First Collected 1963 n/a -
Year Last Collected 1978 n/a -

Type of Variable: Absolute Measure
Encoding: Continuous
Units of Measure: mg/dL
Precision: ###.
Anticipated Range: 000. thru 999.
Masterfile Index: 120-02-01
Related Data Elements: sam1q3 , sam1q7 , sam1q11 , sam1q18 , sam1q21 , sam1q25 , sam1q26 , sam1q29 , sam1q32 , sam1q36 , sam1q45
Specific to this Data Element:
    Inclusion/Exclusion Rules: n/a
    Descriptive History: (none) **pi Dr. Reubin Andres **fc Every fourth or fifth visit. November 4, 1997

    Master File Documentation

    File Type: 120

    Card: 2

    Columns: 1-3

    Variable: Sample 1

    Clarification of data element descriptions:
    Sample 1 is the fasting plasma glucose value. The sample is drawn prior to the start of the test.

    Descriptive history:
    The 120 file type contains data from the intravenous glucose tolerance test (IVGTT). The intravenous glucose dose is 0.375g/kg of body weight and is delivered in 25 per cent dextrose solution over a period of 5 minutes. The tests were performed between January 1963 and June 1977 in BLSA men.

    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 fourth or fifth visit.

    Inclusion/exclusion rules:
    No subjects previously diagnosed with Diabetes Mellitus.

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