cumulative stress

累积应力
  • 文章类型: Journal Article
    最近的多元危机(COVID-19,乌克兰战争,气候变化,经济危机)通过累积压力与心理健康相关联,年轻人特别脆弱。我们调查了403名来自波兰的大学生,以检查他们对经历过的危机的心理反应。结果表明,多危机与弱势群体大学生的心理健康恶化有关(基于性别,性取向,和财务状况)与其他大学生相比,在四个方面:接近危机的感觉,危机造成的压力,减轻危机的责任感,并经历关于危机的日常道德困境。这些年轻人在负面情感方面也遭受了更多的痛苦,抑郁症状,和主观身心健康。我们的研究结果表明,在讨论公共心理健康观点时,重要的是要考虑累积压力的后果及其对弱势群体年轻人的更大影响。
    The recent polycrisis (COVID-19, Ukraine war, climate change, economic crisis) has been associated with mental health through cumulative stress, with young people being particularly vulnerable. We surveyed 403 college students from Poland to examine their psychological responses to the experienced crises. The results showed that polycrisis was associated with worse mental health of college students from disadvantaged groups (based on gender, sexual orientation, and financial situation) compared to other college students, in four areas: sense of proximity to the crises, stress caused by the crises, sense of responsibility for mitigating the crises, and experiencing everyday moral dilemmas regarding the crises. These young adults also suffered more in terms of negative affectivity, depressive symptoms, and subjective physical and mental health. Our findings suggest that when discussing public mental health perspectives, it is important to consider consequences of cumulative stress and its greater impact on young people from disadvantaged groups.
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  • 文章类型: Journal Article
    目的:使用美国中年人(MIDUS)研究的大型纵向样本,本研究扩展了最近开发的分层模型,以确定如何最好地对压力源的积累进行建模,并确定压力源的变化率或压力源的传统综合评分是否是健康结果的更强预测因子。
    方法:我们使用因子分析来估计压力因子得分,然后,为了操作压力源的积累,我们研究了五种方法来汇总有关重复暴露于多种压力源的信息。然后根据不同的健康结果评估这些方法的预测有效性。
    结果:慢性疾病的预测,身体质量指数,日常生活活动困难,执行功能,当使用估计因子得分的曲线下总面积(AUC)对压力源的积累进行建模时,生活后期的情景记忆最强,与传统上用于累积压力研究的综合评分相比,以及线性变化率。
    结论:像内源性的,应激反应性的生物标记,自我报告压力源的个体轨迹的AUC显示出有望作为一种数据减少技术来模拟纵向研究中压力源的积累。总的来说,我们的研究结果表明,考虑不同的定量模型对于理解从中年到成年后期的心理社会应激源的后遗症和预测能力至关重要.
    OBJECTIVE: Using a large longitudinal sample of adults from the Midlife in the United States (MIDUS) study, the present study extended a recently developed hierarchical model to determine how best to model the accumulation of stressors, and to determine whether the rate of change in stressors or traditional composite scores of stressors are stronger predictors of health outcomes.
    METHODS: We used factor analysis to estimate a stress-factor score and then, to operationalize the accumulation of stressors we examined five approaches to aggregating information about repeated exposures to multiple stressors. The predictive validity of these approaches was then assessed in relation to different health outcomes.
    RESULTS: The prediction of chronic conditions, body mass index, difficulty with activities of daily living, executive function, and episodic memory later in life was strongest when the accumulation of stressors was modeled using total area under the curve (AUC) of estimated factor scores, compared to composite scores that have traditionally been used in studies of cumulative stress, as well as linear rates of change.
    CONCLUSIONS: Like endogenous, biological markers of stress reactivity, AUC for individual trajectories of self-reported stressors shows promise as a data reduction technique to model the accumulation of stressors in longitudinal studies. Overall, our results indicate that considering different quantitative models is critical to understanding the sequelae and predictive power of psychosocial stressors from midlife to late adulthood.
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  • 文章类型: Comparative Study
    背景:非裔美国人(AA)女性以多重交叉的边缘化身份驾驭世界。因此,与其他女性相比,AA女性的累积压力负担或同种异体负荷(AL)更高。研究表明,具有大学学位或更高学位的AA女性的AL低于高中文凭的AA女性。我们研究了受教育程度和AL状态与癌症死亡的长期风险的联合影响,以及教育是否缓和了AL和癌症死亡率之间的关联。
    方法:我们在1988年至2010年的国家健康和营养检查调查(NHANES)中对4,677名AA女性进行了回顾性分析,随访数据截至2019年12月31日。我们拟合加权Cox比例风险模型,以估计教育程度/AL之间癌症死亡的调整风险比(aHRs)(调整为年龄,收入,和吸烟状况)。
    结果:与低AL生活的AA大学毕业生相比,低于高中文凭的AA女性患有高AL的癌症死亡风险(未调整的HR:2.98;95%CCI:1.24-7.15)增加了近3倍。然而,在调整了年龄之后,这种效应减弱(年龄校正HR:1.11;95%CI:0.45-2.74)。与低AL的AA相比,高AL的AA女性癌症死亡风险增加了2.3倍(完全调整后的HR:2.26;95%CI:1.10-4.57)。特别是在具有高中文凭或同等学历且没有癌症史的女性中。
    结论:我们的研究结果表明,在受教育程度较低的AA女性中,高的同种异体负荷与较高的癌症死亡率相关。而在受教育程度较高的AA女性中未观察到这种关联。因此,受教育程度在AA女性的同种异体负荷与癌症死亡风险之间的关系中起着调节作用。高等教育可以带来几个好处,包括改善获得医疗保健的机会和提高医疗素养,这反过来可能有助于减轻AL的不利影响和AA女性癌症死亡风险的增加。
    African American (AA) women navigate the world with multiple intersecting marginalized identities. Accordingly, AA women have higher cumulative stress burden or allostatic load (AL) compared to other women. Studies suggest that AA women with a college degree or higher have lower AL than AA women with less than a high school diploma. We examined the joint effect of educational attainment and AL status with long-term risk of cancer mortality, and whether education moderated the association between AL and cancer mortality.
    We performed a retrospective analysis among 4,677 AA women within the National Health and Nutrition Examination Survey (NHANES) from 1988 to 2010 with follow-up data through December 31, 2019. We fit weighted Cox proportional hazards models to estimate adjusted hazard ratios (aHRs) of cancer death between educational attainment/AL (adjusted for age, income, and smoking status).
    AA women with less than a high school diploma living with high AL had nearly a 3-fold increased risk (unadjusted HR: 2.98; 95%C CI: 1.24-7.15) of cancer death compared to AA college graduates living with low AL. However, after adjusting for age, this effect attenuated (age-adjusted HR: 1.11; 95% CI: 0.45-2.74). AA women with high AL had 2.3-fold increased risk of cancer death (fully adjusted HR: 2.26; 95% CI: 1.10-4.57) when compared to AA with low AL, specifically among women with high school diploma or equivalent and without history of cancer.
    Our findings suggest that high allostatic load is associated with a higher risk of cancer mortality among AA women with lower educational attainment, while no such association was observed among AA women with higher educational attainment. Thus, educational attainment plays a modifying role in the relationship between allostatic load and the risk of cancer death for AA women. Higher education can bring several benefits, including improved access to medical care and enhanced medical literacy, which in turn may help mitigate the adverse impact of AL and the heightened risk of cancer mortality among AA women.
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  • 文章类型: Journal Article
    性少数(SM)具有较高的慢性生理应激,如同种异体负荷(AL)所示,这可以部分解释为歧视性做法的一贯经验。这是首批研究SM状态和AL对癌症死亡长期风险的联合影响的研究之一。使用2001年至2010年的国家健康和营养检查调查(NHANES)对12,470名参与者进行了回顾性分析,该调查与2019年12月31日的国家死亡指数相关。Cox比例风险模型估计SM组之间癌症死亡的调整风险比(aHRs)(那些报告为同性恋,拉拉,双性恋,或有同性性伴侣)身份和AL。与低AL的直性/异性恋成年人(n=6674)相比,高AL的SM成年人(n=326)的癌症死亡风险增加了2倍(aHR:2.55,95%CI:1.40-4.65)。在那些生活在高AL中的人中,与高AL的直性/异性恋成年人(n=4957)相比,SM(n=326)的癌症死亡风险增加了2倍(aHR:2.26,95%CI:1.33-3.84)。具有高AL的SM具有增加的癌症死亡风险。这些发现强调了对促进癌症预防的重点议程以及减少SM成人慢性压力的策略的重要意义。
    Sexual minorities (SM) have higher chronic physiologic stress as indicated by allostatic load (AL), which may be explained in part by consistent experiences of discriminatory practices. This is one of the first studies to examine the joint effects of SM status and AL on the association with long-term risk for cancer death. Retrospective analyses were conducted on 12,470 participants using National Health and Nutrition Examination Survey (NHANES) from years 2001 through 2010 linked with the National Death Index through December 31, 2019. Cox proportional hazards models estimated adjusted hazard ratios (aHRs) of cancer deaths between groups of SM (those reporting as gay, lesbian, bisexual, or having same-sex sexual partners) status and AL. SM adults living with high AL (n = 326) had a 2-fold increased risk of cancer death (aHR: 2.55, 95% CI: 1.40-4.65) when compared to straight/heterosexual adults living with low AL (n = 6674). Among those living with high AL, SM (n = 326) had a 2-fold increased risk of cancer death (aHR: 2.26, 95% CI: 1.33-3.84) when compared to straight/heterosexual adults with high AL (n = 4957). SM with high AL have an increased risk of cancer mortality. These findings highlight important implications for promoting a focused agenda on cancer prevention with strategies that reduce chronic stress for SM adults.
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  • 文章类型: Journal Article
    2021年,全球有近3700万儿童流离失所。有1370万难民和2280万国内流离失所者。在欧洲,其中包括23,255名无人陪伴的未成年人寻求庇护,与2020年(13550)相比增长72%。目的是回顾有关无人陪伴的未成年难民(URM)的PTSD的最新文献。作者搜索了OvidMedline,Embase,和Cochrane图书馆从2008年1月1日至2019年1月15日。选择了30份全文,专门研究了无人陪伴的未成年难民(URM)。结果表明,URM患有创伤后应激障碍(在所审查的研究中,PTSD为17-85%。造成创伤后应激障碍的因素很多,包括累积的压力和创伤,内疚,内疚羞耻,以及法律地位的不确定性。保护因素包括韧性,值得信赖的导师,属于社交网络,宗教,有一个成人导师,有一个家庭(即使很远)。移民青年在多元文化肯定的国家最容易茁壮成长。五项干预措施显示出有效性,包括创伤聚焦认知行为疗法(TF-CBT);“MeinWeg”,TF-CBT结合群体处理混合治疗方法;教学恢复技术(TRT),儿童叙事暴露疗法(KIDNET),和表现性艺术干预(EXIT)。重要的精神健康状况包括抑郁症,焦虑,内化和外化行为,经常是PTSD。可以得出结论,URM中经历的高水平的心理健康问题是由于暴露于创伤经历,与父母分离,缺乏社会支持。
    In 2021, there were close to 37 million children displaced worldwide. There were 13.7 million refugees and an additional 22.8 million internally displaced. In Europe, this included 23,255 unaccompanied minors seeking asylum, up 72% compared with 2020 (13,550). The objective was to review the current literature regarding PTSD in unaccompanied refugee minors (URM). The authors searched Ovid Medline, Embase, and Cochrane Library from 1 January 2008 through 15 January 2019. Thirty full texts were chosen that specifically studied unaccompanied refugee minors (URM). The results showed that URM had a prevalence of post-traumatic stress disorder (PTSD of 17-85% across the studies reviewed. There were numerous factors that contributed to PTSD, including cumulative stress and trauma, guilt, shame, and uncertainty about legal status. Protective factors included resilience, a trusted mentor, belonging to a social network, religion, having an adult mentor, and having a family (even if far away). Immigrant youth can thrive most easily in multiculturally affirming countries. Five interventions demonstrated effectiveness, comprising trauma-focused cognitive behavioral therapy (TF-CBT); \"Mein Weg\", a TF-CBT combined with a group-processing mixed therapy approach; teaching recovery techniques (TRT), narrative exposure therapy for children (KIDNET), and expressive arts intervention (EXIT). The significant mental health conditions include depression, anxiety, internalizing and externalizing behaviors, and frequently PTSD. It is fair to conclude that the high levels of mental health problems experienced in URM are due to exposure to traumatic experiences, separation from parents, and lack of social support.
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  • 文章类型: Journal Article
    背景:关于女性退伍军人在COVID-19大流行期间的亲密伴侣暴力(IPV)经历或与大流行相关的压力对她们身心健康的影响知之甚少。
    目的:为了确定大流行之前和期间退伍军人中的IPV经历,与流行病相关的压力源,并检查他们各自对身心健康的贡献。
    方法:从一个更大的基于网络的纵向研究中抽取的全国女性退伍军人样本。最近的IPV和大流行相关的压力源之间的关系进行了线性回归检验,控制大流行前IPV和身心健康症状,人口统计学,和军事相关的协变量。
    方法:一百四十二名女性退伍军人(法师=58.8岁)。
    方法:我们评估了IPV(CTS-2),PTSD(PCL-5),抑郁症(CESD),焦虑(DASS-A),身体健康(PHQ-15),大流行前(2016年6月至2016年12月/2017年1月)和大流行研究期间(2020年3月至2020年12月/2021年1月)的身体健康相关生活质量(SF-12)。我们在大流行研究期间评估了与大流行相关的应激源(EPII)。
    结果:超过三分之一(38.7%)的参与者在大流行研究期间经历了IPV(心理:35.9%,实物:9.9%,性:4.2%)。整体利率,频率,在大流行前和大流行研究期间,IPV经历的严重程度没有显著差异.很少有参与者COVID-19检测呈阳性(4.2%);然而,大多数参与者报告在生活领域经历了与大流行相关的应激源(例如,社交活动:88%,身体健康:80.3%,情绪健康:68.3%)。大流行期间的IPV和与大流行相关的应激源都与更大的PTSD和抑郁症状相关。与大流行相关的压力源与更严重的焦虑和身体健康症状有关。大流行期间的IPV或与大流行相关的压力源都与身体健康相关的生活质量无关。
    结论:大流行期间的IPV经历在退伍军人中很常见,与大流行相关的压力源也是如此。尽管在COVID-19的背景下,IPV没有增加,但大流行期间的IPV经历和与大流行相关的压力源与较差的身心健康有关。
    Little is known about women veterans\' intimate partner violence (IPV) experiences during the COVID-19 pandemic or the impacts of pandemic-related stress on their mental and physical health.
    To identify IPV experiences among women veterans prior to and during the pandemic, pandemic-related stressors, and examine their respective contributions to mental and physical health.
    National sample of women veterans drawn from a larger web-based longitudinal study. Relationships between recent IPV and pandemic-related stressors were tested with linear regressions, controlling for pre-pandemic IPV and mental and physical health symptoms, demographic, and military-related covariates.
    One hundred forty-two women veterans (Mage=58.8 years).
    We assessed IPV (CTS-2), PTSD (PCL-5), depression (CESD), anxiety (DASS-A), physical health (PHQ-15), and physical health-related quality of life (SF-12) prior to the pandemic (June 2016-December 2016/January 2017) and during the pandemic study period (March 2020-December 2020/January 2021). We assessed pandemic-related stressors (EPII) during the pandemic study period.
    Over a third (38.7%) of participants experienced IPV during the pandemic study period (psychological: 35.9%, physical: 9.9%, sexual: 4.2%). Overall rates, frequency, and severity of IPV experience did not significantly differ between the pre-pandemic and pandemic study periods. Few participants tested positive for COVID-19 (4.2%); however, most participants reported experiencing pandemic-related stressors across life domains (e.g., social activities: 88%, physical health: 80.3%, emotional health: 68.3%). IPV during the pandemic and pandemic-related stressors were both associated with greater PTSD and depressive symptoms. Pandemic-related stressors were associated with worse anxiety and physical health symptoms. Neither IPV during the pandemic nor pandemic-related stressors were associated with physical health-related quality of life.
    IPV experiences during the pandemic were common among women veterans, as were pandemic-related stressors. Although IPV did not increase in the context of COVID-19, IPV experiences during the pandemic and pandemic-related stressors were linked with poorer mental and physical health.
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  • 文章类型: Journal Article
    一些研究表明,慢性应激可能与癌症死亡风险增加有关。我们的研究试图确定同种异体载荷(AL)之间的关联,累积压力的度量,和癌症死亡风险;以及这些关联是否因种族/民族而异。
    我们使用1988年至2010年的国家健康和营养检查调查(NHANES)与2019年12月31日的国家死亡指数进行了回顾性分析。我们拟合了Fine和GrayCox比例风险模型,以估计高AL状态和低AL状态之间癌症死亡的子分布风险比(SHR)(根据年龄调整的模型,社会人口统计学,和合并症)。
    在完全调整的型号中,在所有参与者中,高AL与癌症死亡风险增加14%(校正(SHR):1.14,95%CI:1.04~1.26)相关,在非西班牙裔白人(NH-White)成人中,高AL与癌症死亡风险增加18%(SHR:1.18,95%CI:1.03~1.34)相关.当进一步按年龄分层时(参与者年龄<40岁),在所有参与者中,高AL与风险增加80%相关(SHR:1.80,95%CI:1.35-2.41);在NH-白人成年人中,风险增加95%(SHR:1.95,95%CI:1.22-3.12);在非西班牙裔黑人(西班牙裔黑人)成年人中,风险增加2倍(SHR:2.06,95%CI:1.27-3.34);在36个SHCI成年人中,风险增加
    总的来说,癌症死亡的风险与高AL相关;然而,当在NH-Black和西班牙裔成年人中分层时,这种关联略有减弱。
    高AL与总体癌症死亡风险增加有关,未来的研究应该描述AL和癌症特异性死亡率之间的关联,以更好地理解累积压力和癌症之间的因果机制.
    UNASSIGNED: Several studies suggest that chronic stress may be associated with increased risk of cancer mortality. Our study sought to determine the association between allostatic load (AL), a measure of cumulative stress, and risk of cancer death; and whether these associations varied by race/ethnicity.
    UNASSIGNED: We performed retrospective analysis using National Health and Nutrition Examination Survey (NHANES) years 1988 through 2010 linked with the National Death Index through December 31, 2019. We fit Fine & Gray Cox proportional hazards models to estimate sub-distribution hazard ratios (SHRs) of cancer death between high and low AL status (models adjusted for age, sociodemographics, and comorbidities).
    UNASSIGNED: In fully adjusted models, high AL was associated with a 14% increased risk of cancer death (adjusted (SHR): 1.14, 95% CI: 1.04-1.26) among all participants and a 18% increased risk of cancer death (SHR:1.18, 95% CI: 1.03-1.34) among Non-Hispanic White (NH-White) adults. When further stratified by age (participants aged <40 years), high AL was associated with a 80% increased risk (SHR: 1.80, 95% CI: 1.35-2.41) among all participants; a 95% increased risk (SHR: 1.95, 95% CI: 1.22-3.12) among NH-White adults; a 2-fold (SHR: 2.06, 95% CI: 1.27-3.34) increased risk among Non-Hispanic Black (NH-Black) adults; and a 36% increased risk among Hispanic adults (SHR: 1.36, 95% CI: 0.70-2.62).
    UNASSIGNED: Overall, the risk of cancer death was associated with high AL; however, when stratified among NH-Black and Hispanic adults this association was slightly attenuated.
    UNASSIGNED: High AL is associated with increased risk of overall cancer death, and future studies should delineate the association between AL and cancer-specific mortality to better understand the causal mechanisms between cumulative stress and cancer.
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  • 文章类型: Journal Article
    给出了形成基本芯原纤维(shish)的处理方法,该类型是由聚合物从溶液中的流动诱导结晶产生的,其特征是累积应变的概念。通过流动细长分子的多重成核作用产生胚胎原纤维,该纤维是一组连接的束状核。由于核或微晶之间的无定形区中的准无规卷曲链的排斥而产生的表面应力随着核的成熟而在束末端建立,最终导致高端表面自由能,以及包含芯原纤维的微晶中的体积应变。该理论导致具有固定轴向比的稳定(或亚稳态)原纤维直径as和平均特征长度ls,并预测为什么直径即使在聚合物过饱和的介质中也不会进一步增长。as的预测依赖性,ls,和轴比,过冷与实验基本一致。体积应变引起的晶体晶格膨胀也与实验相当。退火的影响,包括体积应变松弛以给出正常晶格尺寸的常见情况,但是高端表面能量仍然存在,注意到。计算了体积应变和约1s的芯原纤维长度分布对熔融行为的影响。该理论可以再现聚乙烯原纤维的结晶度与温度的关系数据。这个过程产生独立的值l。整体处理意味着核心原纤维是一组串联且基本上延伸的链微晶,具有成束状末端,并且在未退火和张力下具有一定程度的扩展晶格,由短的无定形睫状桥组成的微晶之间的分子连接。建议在高温下长时间退火可以去除大量的非晶区。
    A treatment of the formation of a basic core fibril (shish) of the type that is generated by flow-induced crystallization of a polymer from solution is given that features the concept of cumulative strain. Multiple nucleation acts by flow-elongated molecules produce an embryonic fibril that is a connected set of bundlelike nuclei. Surface stress resulting from repulsion of the quasi-random coil chains in the amorphous zone between the nuclei or crystallites builds up at the bundle ends as the nuclei mature, leading ultimately to a high end surface free energy, and to volume strain in the crystallites comprising the core fibril. The theory leads to a stable (or metastable) fibril diameter a s and mean characteristic length l s with a fixed axial ratio, and predicts why the diameter does not grow further even in a medium that is supersaturated with polymer. The predicted dependence of a s, l s , and the axial ratio, on undercooling is in approximate agreement with experiment. The lattice expansion in the crystal resulting from volume strain is also in fair accord with experiment. The effect of annealing, including the commonly encountered case where the volume strain relaxes to give normal lattice dimensions, but with a high end surface energy still remaining, is noted. The effect of volume strain and the distribution of core fibril lengths about l s on the melting behavior is calculated. The theory can reproduce crystallinity versus temperature data on polyethylene fibrils. This procedure yields an independent value of l s . The overall treatment implies that the core fibril is a set of concatenated and substantially extended-chain crystallites with bundlelike ends and a somewhat expanded lattice when unannealed and under tension, the molecular connections between the crystallites consisting of short amorphous ciliary bridges. It is suggested that prolonged annealing at high temperatures can remove a substantial number of the amorphous zones.
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  • 文章类型: Journal Article
    Stress may impact the ability to effectively regulate emotions. To study the impact of stressful experiences in early and recent life on emotion regulation, we examined the relationship between early life stress, recent stress, and brain activation during cognitive reappraisal. We investigated two regulation goals: the decrease and increase of emotional response to both negative and positive stimuli. Furthermore, two models of stress consequences were examined: the cumulative and match/mismatch models. A total of 83 participants (Mage = 21.66) took part in the study. There was an interaction between cumulative stress and stimuli valence in the cuneus, superior lateral occipital cortex, superior parietal lobule, supramarginal gyrus extending to superior temporal gyrus, and precentral gyrus extending to supplementary motor area. Interaction between mismatched stress index and stimuli valence was found in the left hippocampus, left insula extending to the orbitofrontal cortex and amygdala, and in a cluster including the anterior cingulate cortex, superior frontal gyrus, and frontal pole. Furthermore, there were differences between the effects of cumulative and mismatched stress indices on brain activation during reappraisal of positive but not negative stimuli. Results indicate that cumulative stress and match/mismatch approaches are both useful for explaining brain activation during reappraisal. This finding is important for our understanding of the multifaceted impact of stress on emotion regulation.
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  • 文章类型: Journal Article
    本研究在来自美国的成年人的大概率样本中测试了累积压力的分层模型。
    使用探索性因素分析(EFA)和验证性因素分析(CFA)模型来开发和测试累积压力的分层模型。使用结构方程模型来估计与人口统计学因素的并发关联,多基因风险评分,和身体健康的结果,以及与身体健康结果的前瞻性关联。
    累积应力的分层模型是最佳拟合模型,用一个通用的“s-factor”捕捉压力从属维度的趋势。与人口统计学因素和生理和心理表型的多基因风险评分的关联为累积压力的一般s因子的收敛有效性提供了证据。累积压力的一般因素和从属因素也与身体健康结果相关,同时和前瞻性地,包括慢性疾病的数量,身体质量指数,日常生活活动困难。
    像其他人类个体差异一样,社会压力源的共存可以通过分层模型来理解。
    The present study tested a hierarchical model of cumulative stress in a large probability sample of adults from the United States.
    Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) models were used to develop and test a hierarchical model of cumulative stress. Structural equation models were used to estimate concurrent associations with demographic factors, polygenic risk scores, and physical health outcomes, as well as prospective associations with physical health outcomes.
    A hierarchical model of cumulative stress was the best-fitting model, with a general \"s-factor\" capturing the tendency for subordinate dimensions of stress to correlate. Associations with demographic factors and polygenic risk scores for physical and psychological phenotypes provide evidence for the convergent validity of a general s-factor of cumulative stress. The general s-factor and subordinate factors of cumulative stress were also associated with physical health outcomes, concurrently and prospectively, including number of chronic conditions, body mass index, and difficulty with activities of daily living.
    Like other human individual differences, the co-occurrence of social stressors can be understood using a hierarchical model.
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