Journal article
Salivary cortisol protocol adherence and reliability by socio-demographic features: The Multi-Ethnic Study of Atherosclerosis
Psychoneuroendocrinology, v 43, pp 30-40
May 2014
PMID: 24703168
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Abstract
Collection of salivary cortisol has become increasingly popular in large population-based studies. However, the impact of protocol compliance on day-to-day reliabilities of measures, and the extent to which reliabilities differ systematically according to socio-demographic characteristics, has not been well characterized in large-scale population-based studies to date. Using data on 935 men and women from the Multi-Ethnic Study of Atherosclerosis, we investigated whether sampling protocol compliance differs systematically according to socio-demographic factors and whether compliance was associated with cortisol estimates, as well as whether associations of cortisol with both compliance and socio-demographic characteristics were robust to adjustments for one another. We further assessed the day-to-day reliability for cortisol features and the extent to which reliabilities vary according to socio-demographic factors and sampling protocol compliance. Overall, we found higher compliance among persons with higher levels of income and education. Lower compliance was significantly associated with a less pronounced cortisol awakening response (CAR) but was not associated with any other cortisol features, and adjustment for compliance did not affect associations of socio-demographic characteristics with cortisol. Reliability was higher for area under the curve (AUC) and wake up values than for other features, but generally did not vary according to socio-demographic characteristics, with few exceptions. Our findings regarding intra-class correlation coefficients (ICCs) support prior research indicating that multiple day collection is preferable to single day collection, particularly for CAR and slopes, more so than wakeup and AUC. There were few differences in reliability by socio-demographic characteristics. Thus, it is unlikely that group-specific sampling protocols are warranted.
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Details
- Title
- Salivary cortisol protocol adherence and reliability by socio-demographic features: The Multi-Ethnic Study of Atherosclerosis
- Creators
- Sherita Hill Golden - Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USABrisa N Sánchez - Department of Biostatistics, University of Michigan – Ann Arbor, MI 48109, USAAmy S DeSantis - Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan – Ann Arbor, MI 48109, USAMeihua Wu - Department of Biostatistics, University of Michigan – Ann Arbor, MI 48109, USACecilia Castro - Department of Epidemiology, Columbia University, New York, NY 10032, USATeresa E Seeman - Department of Epidemiology, University of California – Los Angeles, CA 10945, USASameh Tadros - Department of Epidemiology, University of California – Los Angeles, CA 10945, USASandi Shrager - Department of Biostatistics, University of Washington, Seattle, WA 98115, USAAna V Diez Roux - Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan – Ann Arbor, MI 48109, USA
- Publication Details
- Psychoneuroendocrinology, v 43, pp 30-40
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Urban Health Collaborative; Epidemiology and Biostatistics
- Web of Science ID
- WOS:000335097000004
- Scopus ID
- 2-s2.0-84897461224
- Other Identifier
- 991014877656104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Endocrinology & Metabolism
- Neurosciences
- Psychiatry