Details of Element:
Ccx High Density Lipoprotein 3
Component of
Medical Laboratory
Unique Name: chdlq
Contained in the
Common BLSA Data Set
? Yes
|
Data Points (as of 09/06/98) |
Males |
Females |
Total |
|
Number of Data Points |
2018 |
1738 |
3756 |
|
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: 002-04-49
Related Data Elements: none
Specific to this Data Element:
Descriptive history:
High density lipoproteins 3 (also known as HDL3-cholesterol subfraction) have been measured
continuously since
1985. During this time, different methods and different laboratories have provided the
HDL3-cholesterol values.
ccx high density lipoprotein 3' refers to measurements made at the GRC using the Abbott CCX
analyzer. (HDL3-cholesterols measured from 1985 to 1992 on the Abbott ABA-200 analyzer are
not on the Masterfile. Contact
investigators for more information). From 1991 to the present, ccx high density lipoprotein 3 has
been measured
in plasma using the Abbott CCX method.
Other high density lipoprotein 3 values (see above) measured in different sample types and with
different
methodologies are not equivalent. The ccx high density lipoprotein 3' 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:
None.
Details
for this Data Type
JM -
Disclaimer
Revised 09/18/98 -- Send comments to our
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