2.50
Hdl Handle:
http://hdl.handle.net/10755/158203
Type:
Presentation
Title:
Systemic Glucocorticoid Levels: A Model for Biological Measurement Errors
Abstract:
Systemic Glucocorticoid Levels: A Model for Biological Measurement Errors
Conference Sponsor:Western Institute of Nursing
Conference Year:1996
Author:Westfall, Una, PhD
P.I. Institution Name:Oregon Health & Science University
Title:Professor
Contact Address:School of Nursing, 3181 SW Sam Jackson Park Road, Portland, OR, 97201, USA
Contact Telephone:503.494.8311
Measurement scores or levels are traditionally comprised of two

parts: the true value plus the error segment.



Measurement Level = True Value + Error Segment



For biologic variables, elements that can contribute to the error

segment originate from one or more of the following areas: 1) the

signal source, 2) the data collection; 3) the sample processing;

and 4) the output.



Glucocorticoid levels have been, and are, important biological

markers in multiple nursing studies. From recent and ongoing

research studies that have the primary plasma glucocorticoid

as a dependent variable, examples of measurement errors from each

of the four (4) areas outlined above can be highlighted. Practical

considerations including questions and approaches to minimize,

account for, or control aspects within each of these error areas

will be emphasized.



Of particular importance for nurses conducting research using

biological variables is the dimension of time, or temporal

patterns. The time dimension can be separated out as a third

component of the measurement equation. Such an approach can result

in the error segment making up a smaller portion of the measurement

level and the true value contributing a larger portion to the

obtained level. In addition, a narrower range of variability based

on specific time points can emerge for selected biological

variables.

Repository Posting Date:
26-Oct-2011
Date of Publication:
17-Oct-2011
Sponsors:
Western Institute of Nursing

Full metadata record

DC FieldValue Language
dc.typePresentationen_GB
dc.titleSystemic Glucocorticoid Levels: A Model for Biological Measurement Errorsen_GB
dc.identifier.urihttp://hdl.handle.net/10755/158203-
dc.description.abstract<table><tr><td colspan="2" class="item-title">Systemic Glucocorticoid Levels: A Model for Biological Measurement Errors</td></tr><tr class="item-sponsor"><td class="label">Conference Sponsor:</td><td class="value">Western Institute of Nursing</td></tr><tr class="item-year"><td class="label">Conference Year:</td><td class="value">1996</td></tr><tr class="item-author"><td class="label">Author:</td><td class="value">Westfall, Una, PhD</td></tr><tr class="item-institute"><td class="label">P.I. Institution Name:</td><td class="value">Oregon Health &amp; Science University</td></tr><tr class="item-author-title"><td class="label">Title:</td><td class="value">Professor</td></tr><tr class="item-address"><td class="label">Contact Address:</td><td class="value">School of Nursing, 3181 SW Sam Jackson Park Road, Portland, OR, 97201, USA</td></tr><tr class="item-phone"><td class="label">Contact Telephone:</td><td class="value">503.494.8311</td></tr><tr class="item-email"><td class="label">Email:</td><td class="value">westfall@ohsu.edu</td></tr><tr><td colspan="2" class="item-abstract">Measurement scores or levels are traditionally comprised of two<br/><br/>parts: the true value plus the error segment.<br/><br/><br/><br/>Measurement Level = True Value + Error Segment<br/><br/><br/><br/>For biologic variables, elements that can contribute to the error<br/><br/>segment originate from one or more of the following areas: 1) the<br/><br/>signal source, 2) the data collection; 3) the sample processing;<br/><br/>and 4) the output.<br/><br/><br/><br/>Glucocorticoid levels have been, and are, important biological<br/><br/>markers in multiple nursing studies. From recent and ongoing<br/><br/>research studies that have the primary plasma glucocorticoid<br/><br/>as a dependent variable, examples of measurement errors from each<br/><br/>of the four (4) areas outlined above can be highlighted. Practical<br/><br/>considerations including questions and approaches to minimize,<br/><br/>account for, or control aspects within each of these error areas<br/><br/>will be emphasized.<br/><br/><br/><br/>Of particular importance for nurses conducting research using<br/><br/>biological variables is the dimension of time, or temporal<br/><br/>patterns. The time dimension can be separated out as a third<br/><br/>component of the measurement equation. Such an approach can result<br/><br/>in the error segment making up a smaller portion of the measurement<br/><br/>level and the true value contributing a larger portion to the<br/><br/>obtained level. In addition, a narrower range of variability based<br/><br/>on specific time points can emerge for selected biological<br/><br/>variables.<br/><br/></td></tr></table>en_GB
dc.date.available2011-10-26T20:36:45Z-
dc.date.issued2011-10-17en_GB
dc.date.accessioned2011-10-26T20:36:45Z-
dc.description.sponsorshipWestern Institute of Nursingen_GB
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