Comparison of human hair cortisol concentration stability for 1-year and 2-year test-retest intervals.

IF 3 2区心理学 Q2 PSYCHIATRY Stress and Health Pub Date : 2024-08-14 DOI:10.1002/smi.3465

Alex Bertrams, Myriam Zäch, Nina Minkley

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Abstract

Human hair cortisol concentration (HCC) has previously been found to be highly stable for a 1-year interval (r = 0.73) in terms of a product-moment correlation. The present study aimed to replicate this finding and compare HCC stability regarding 1-year and 2-year test-retest intervals. Female university students (N = 39) provided hair strands twice (t1 and t2) at intervals of 1 (n = 21) or 2 years (n = 18). Multiple regression analysis predicting HCC at t2 revealed a significant interaction term (HCC at t1 × time interval condition). It was determined that HCCs were substantially related for the 1-year interval but unrelated for the 2-year interval. The findings were not attributable to potential influences, such as hair treatment. The product-moment correlation showed nearly identical consistency with previous research regarding the 1-year test-retest interval. There was no significant product-moment correlation for the 2-year interval. Overall, these findings indicate that within a temporal framework of 1 year, HCCs may be stable predictors in correlational studies where the focus is on the rank orders of measured values.

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比较人体毛发皮质醇浓度在 1 年和 2 年测试间隔内的稳定性。

根据乘积-矩相关性，人体毛发皮质醇浓度（HCC）在 1 年的间隔期内高度稳定（r = 0.73）。本研究旨在复制这一发现，并比较头发皮质醇浓度在 1 年和 2 年测试间隔内的稳定性。女大学生（39 人）在 1 年（21 人）或 2 年（18 人）的时间间隔内提供了两次（t1 和 t2）发丝。预测 t2 时 HCC 的多元回归分析表明存在显著的交互项（t1 时的 HCC × 时间间隔条件）。结果表明，1 年间隔期的 HCCs 有很大关系，但 2 年间隔期的 HCCs 则没有关系。这些结果与潜在的影响因素（如头发处理）无关。乘积-矩相关性与之前关于 1 年测试-重复测试间隔的研究结果几乎完全一致。2 年间隔期的乘积-时刻相关性不明显。总之，这些研究结果表明，在 1 年的时间框架内，HCC 可能是相关研究中稳定的预测因子，因为相关研究的重点是测量值的等级顺序。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Stress and Health 医学-精神病学

CiteScore

6.40

自引率

4.90%

发文量

审稿时长

>12 weeks

期刊介绍： Stress is a normal component of life and a number of mechanisms exist to cope with its effects. The stresses that challenge man"s existence in our modern society may result in failure of these coping mechanisms, with resultant stress-induced illness. The aim of the journal therefore is to provide a forum for discussion of all aspects of stress which affect the individual in both health and disease. The Journal explores the subject from as many aspects as possible, so that when stress becomes a consideration, health information can be presented as to the best ways by which to minimise its effects.