Eric T Klopack

Title(s)Postdoctoral Scholar - Research Associate
SchoolSchool of Gerontology
Address3715 Mcclintock Ave.
University Park Campus
Los Angeles CA 90089
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. How much can biomarkers explain sociodemographic inequalities in cognitive dysfunction and cognitive impairment? Results from a machine learning model in the Health and Retirement Study. J Alzheimers Dis. 2025 May 05; 13872877251338063. Klopack ET, Farina MP, Thyagarajan B, Faul JD, Crimmins EM. PMID: 40325957.
      View in: PubMed   Mentions:    Fields:    
    2. Development of a novel transcriptomic measure of aging: Transcriptomic Mortality-risk Age (TraMA). medRxiv. 2024 Dec 06. Klopack ET, Seshadri G, Arpawong TE, Cole S, Thyagarajan B, Crimmins EM. PMID: 39677460; PMCID: PMC11643192.
      View in: PubMed   Mentions:
    3. A novel DNA methylation-based surrogate biomarker for chronic systemic inflammation (InfLaMeS): results from the Health and Retirement Study. medRxiv. 2024 Oct 15. Meier HCS, Klopack ET, Farnia MP, Hernandez B, Mitchell C, Faul JD, McCrory C, Kenny RA, Crimmins EM. PMID: 39484273; PMCID: PMC11527057.
      View in: PubMed   Mentions:
    4. Epigenetic Aging Helps Explain Differential Resilience in Older Adults. Demography. 2024 08 01; 61(4):1023-1041. Klopack ET, Crimmins EM. PMID: 39012228; PMCID: PMC11485224.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    5. Generations of epigenetic clocks and their links to socioeconomic status in the Health and Retirement Study. Epigenomics. 2024; 16(14):1031-1042. Crimmins EM, Klopack ET, Kim JK. PMID: 39023350; PMCID: PMC11404624.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansCells
    6. The embodiment of parental death in early life through accelerated epigenetic aging: Implications for understanding how parental death before 18 shapes age-related health risk among older adults. SSM Popul Health. 2024 Jun; 26:101648. Farina MP, Klopack ET, Umberson D, Crimmins EM. PMID: 38596364; PMCID: PMC11002886.
      View in: PubMed   Mentions: 2  
    7. Parental Divorce in Childhood and the Accelerated Epigenetic Aging for Earlier and Later Cohorts: Role of Mediators of Chronic Depressive Symptoms, Education, Smoking, Obesity, and Own Marital Disruption. J Popul Ageing. 2024 Jun; 17(2):297-313. Kim JK, Arpawong TE, Klopack ET, Crimmins EM. PMID: 39131698; PMCID: PMC11313353.
      View in: PubMed   Mentions: 1  
    8. Immune cells are associated with mortality: the Health and Retirement Study. Front Immunol. 2023; 14:1280144. Seshadri G, Vivek S, Prizment A, Crimmins EM, Klopack ET, Faul J, Guan W, Meier HCS, Thyagarajan B. PMID: 37928548; PMCID: PMC10623116.
      View in: PubMed   Mentions: 5     Fields:    Translation:HumansCells
    9. Chronic Stress and Latent Virus Reactivation: Effects on Immune Aging, Chronic Disease Morbidity, and Mortality. J Gerontol B Psychol Sci Soc Sci. 2023 10 09; 78(10):1707-1716. Klopack ET. PMID: 37294880; PMCID: PMC10561893.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansCells
    10. Social relationships and epigenetic aging in older adulthood: Results from the Health and Retirement Study. Brain Behav Immun. 2023 11; 114:349-359. Rentscher KE, Klopack ET, Crimmins EM, Seeman TE, Cole SW, Carroll JE. PMID: 37683960; PMCID: PMC10650967.
      View in: PubMed   Mentions: 8     Fields:    Translation:HumansCells
    11. Short Sleep and Insomnia Are Associated With Accelerated Epigenetic Age. Psychosom Med. 2024 Jun 01; 86(5):453-462. Kusters CDJ, Klopack ET, Crimmins EM, Seeman TE, Cole S, Carroll JE. PMID: 37594243; PMCID: PMC10879461.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    12. ADHD genetic burden associates with older epigenetic age: mediating roles of education, behavioral and sociodemographic factors among older adults. Clin Epigenetics. 2023 04 26; 15(1):67. Arpawong TE, Klopack ET, Kim JK, Crimmins EM. PMID: 37101297; PMCID: PMC10131361.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansCells
    13. Socioeconomic status and immune aging in older US adults in the health and retirement study. Biodemography Soc Biol. 2022 Jul-Dec; 67(3-4):187-202. Klopack ET, Thyagarajan B, Faul JD, Meier HCS, Ramasubramanian R, Kim JK, Crimmins EM. PMID: 36472376; PMCID: PMC9869898.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    14. Do Loneliness and Per Capita Income Combine to Increase the Pace of Biological Aging for Black Adults across Late Middle Age? Int J Environ Res Public Health. 2022 10 17; 19(20). Beach SRH, Klopack ET, Carter SE, Philibert RA, Simons RL, Gibbons FX, Ong ML, Gerrard M, Lei MK. PMID: 36294002; PMCID: PMC9602511.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    15. School Disengagement Predicts Accelerated Aging among Black American Youth: Mediation by Psychological Maladjustment and Moderation by Supportive Parenting. Int J Environ Res Public Health. 2022 09 23; 19(19). Ong ML, Klopack ET, Carter S, Simons RL, Beach SRH. PMID: 36231334; PMCID: PMC9564392.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    16. Evaluation of T-cell aging-related immune phenotypes in the context of biological aging and multimorbidity in the Health and Retirement Study. Immun Ageing. 2022 Jul 20; 19(1):33. Ramasubramanian R, Meier HCS, Vivek S, Klopack E, Crimmins EM, Faul J, Nikolich-Žugich J, Thyagarajan B. PMID: 35858901; PMCID: PMC9297609.
      View in: PubMed   Mentions: 24  
    17. Social stressors associated with age-related T lymphocyte percentages in older US adults: Evidence from the US Health and Retirement Study. Proc Natl Acad Sci U S A. 2022 06 21; 119(25):e2202780119. Klopack ET, Crimmins EM, Cole SW, Seeman TE, Carroll JE. PMID: 35696572; PMCID: PMC9231620.
      View in: PubMed   Mentions: 23     Fields:    Translation:HumansCells
    18. Lifetime exposure to smoking, epigenetic aging, and morbidity and mortality in older adults. Clin Epigenetics. 2022 05 28; 14(1):72. Klopack ET, Carroll JE, Cole SW, Seeman TE, Crimmins EM. PMID: 35643537; PMCID: PMC9148451.
      View in: PubMed   Mentions: 31     Fields:    Translation:HumansAnimalsCells
    19. Patterns of Co-occurring Developmental Failures in Adolescence: Socioeconomic and Genetic Antecedents and Health Outcomes in Adulthood. Biodemography Soc Biol. 2022 Apr-Jun; 67(2):102-121. Wickrama KKAS, Lee TK, Klopack ET, Lee S, O'Neal CW. PMID: 35321604.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    20. Accelerated epigenetic aging mediates link between adverse childhood experiences and depressive symptoms in older adults: Results from the Health and Retirement Study. SSM Popul Health. 2022 Mar; 17:101071. Klopack ET, Crimmins EM, Cole SW, Seeman TE, Carroll JE. PMID: 35313610; PMCID: PMC8933834.
      View in: PubMed   Mentions: 31  
    21. Conjoint trajectories of couples' marital and parental conflictual behaviors and later-life mental, physical, and relational health. J Soc Pers Relat. 2022 Jun; 39(7):1934-1958. Lee S, Wickrama KA, Lee TK, Klopack ET. PMID: 39640207; PMCID: PMC11619885.
      View in: PubMed   Mentions: 1  
    22. Midlife financial strain and later-life health and wellbeing of husbands and wives: Linking and moderating roles of couple intimacy trajectories. Fam Process. 2022 12; 61(4):1593-1609. Wickrama KAS, O'Neal CW, Klopack ET. PMID: 34988990; PMCID: PMC9851178.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    23. Trajectories of adolescent stressful life events and young adults' socioeconomic and relational outcomes: Weight and depressive symptoms as mediators. Br J Dev Psychol. 2022 06; 40(2):334-351. Wickrama KAS, Klopack ET, Sutton TE. PMID: 34962311.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    24. Higher-order trajectories of pain and depressive symptoms link midlife financial stress to women's well-being in later life. Aging Ment Health. 2022 12; 26(12):2358-2365. Wickrama KAS, Klopack ET, O'Neal CW. PMID: 34693847; PMCID: PMC9152740.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    25. Unstable Childhood, Adult Adversity, and Smoking Accelerate Biological Aging Among Middle-Age African Americans: Similar Findings for GrimAge and PoAm. J Aging Health. 2022 Aug-Sep; 34(4-5):487-498. Simons RL, Ong ML, Lei MK, Klopack E, Berg M, Zhang Y, Philibert R, Beach SSR. PMID: 34525884; PMCID: PMC9851128.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    26. Life course trajectories of chronic financial strain and acute stress reactivity: Steeling in response to recovery from strain. Stress Health. 2022 Apr; 38(2):277-289. Klopack ET, Wickrama KAS, Simons RL. PMID: 34379875; PMCID: PMC9190465.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    27. Childhood adversity is linked to adult health among African Americans via adolescent weight gain and effects are genetically moderated. Dev Psychopathol. 2021 08; 33(3):803-820. Beach SRH, Ong ML, Lei MK, Klopack E, Carter SE, Simons RL, Gibbons FX, Lavner JA, Philibert RA, Ye K. PMID: 32372728; PMCID: PMC7644595.
      View in: PubMed   Mentions: 7  Translation:Humans
    28. Midlife family financial strain, sense of control and pain in later years: An investigation of rural husbands and wives. Stress Health. 2021 Oct; 37(4):790-800. Wickrama KAS, Klopack ET, O'Neal CW. PMID: 33687801; PMCID: PMC8426448.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    29. How Midlife Chronic Stress Combines with Stressful Life Events to Influence Later Life Mental and Physical Health for Husbands and Wives in Enduring Marriages. J Aging Health. 2021 01; 33(1-2):14-26. Wickrama KAS, Klopack ET, O'Neal CW. PMID: 32867565; PMCID: PMC8353959.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    30. The effects of social adversity, discrimination, and health risk behaviors on the accelerated aging of African Americans: Further support for the weathering hypothesis. Soc Sci Med. 2021 08; 282:113169. Simons RL, Lei MK, Klopack E, Beach SRH, Gibbons FX, Philibert RA. PMID: 32690336; PMCID: PMC7790841.
      View in: PubMed   Mentions: 75     Fields:    Translation:Humans
    31. Racial Discrimination, Inflammation, and Chronic Illness Among African American Women at Midlife: Support for the Weathering Perspective. J Racial Ethn Health Disparities. 2021 04; 8(2):339-349. Simons RL, Lei MK, Klopack E, Zhang Y, Gibbons FX, Beach SRH. PMID: 32488825; PMCID: PMC8183614.
      View in: PubMed   Mentions: 36     Fields:    Translation:Humans
    32. Social and psychological consequences of the COVID-19 outbreak: The experiences of Taiwan and Hong Kong. Psychol Trauma. 2020 Aug; 12(S1):S35-S37. Lei MK, Klopack ET. PMID: 32478548.
      View in: PubMed   Mentions: 14     Fields:    Translation:HumansPHPublic Health
    33. Husbands' and wives' stressful work, couple BMI dynamics, and later-life physical health. Stress Health. 2020 Oct; 36(4):507-521. Wickrama KAS, Klopack ET, O'Neal CW. PMID: 32369269; PMCID: PMC8356026.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    34. "Sibling relationships in older adulthood: Links with loneliness and well-being": Correction. J Fam Psychol. 2020 Aug; 34(5):522. Stocker CM, Gilligan M, Klopack ET, Conger KJ, Lanthier RP, Neppl TK, O'Neal CW, Wickrama KAS. PMID: 32324019.
      View in: PubMed   Mentions:    Fields:    
    35. Patterning of midlife marital trajectories in enduring marriages in a dyadic context: Physical and mental health outcomes in later years. J Soc Pers Relat. 2020 May 01; 37(5):1472-1493. Wickrama KAS, Klopack ET, O'Neal CW, Neppl T. PMID: 34504386; PMCID: PMC8425265.
      View in: PubMed   Mentions: 4  
    36. Couple-Level Stress Proliferation and Husbands' and Wives' Distress During the Life Course. J Marriage Fam. 2020 Jun; 82(3):1041-1055. Wickrama KAS, O'Neal CW, Klopack ET. PMID: 34393266; PMCID: PMC8360363.
      View in: PubMed   Mentions: 1  
    37. Disentangling the Effects of Boys' Pubertal Timing: The Importance of Social Context. J Youth Adolesc. 2020 Jul; 49(7):1393-1405. Klopack ET, Sutton TE, Simons RL, Simons LG. PMID: 31587175; PMCID: PMC9290439.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    38. Life Course Patterns of Concurrent Trajectories of BMI and Affective Symptoms of Rural Mothers: Socioeconomic Antecedents and Disease Outcomes in Later Life. J Gerontol B Psychol Sci Soc Sci. 2019 09 15; 74(7):1233-1244. Wickrama KKAS, Klopack ET, O'Neal CW, Beach SRH, Neppl T, Lorenz FO, Bae D. PMID: 31529127; PMCID: PMC6748707.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    39. Sibling relationships in older adulthood: Links with loneliness and well-being. J Fam Psychol. 2020 Mar; 34(2):175-185. Stocker CM, Gilligan M, Klopack ET, Conger KJ, Lanthier RP, Neppl TK, O'Neal CW, Wickrama KAS. PMID: 31414866; PMCID: PMC7012710.
      View in: PubMed   Mentions: 15     Fields:    Translation:Humans
    40. Stressful work conditions, positive affect, and physical health of middle-aged couples: A dyadic analysis. Stress Health. 2019 Oct; 35(4):382-395. Wickrama KAS, Lee S, Klopack ET, Wickrama T. PMID: 30882975; PMCID: PMC11139027.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    41. Modeling Latent Change Score Analysis and Extensions in Mplus: A Practical Guide for Researchers. Struct Equ Modeling. 2020; 27(1):97-110. Klopack ET, Wickrama KKAS. PMID: 33013155; PMCID: PMC7531193.
      View in: PubMed   Mentions: 16  
    42. Racial Discrimination as a Risk Factor for African American Men's Physical Partner Violence: A Longitudinal Test of Mediators and Moderators. Violence Against Women. 2020 02; 26(2):164-190. Sutton TE, Gordon Simons L, Martin BT, Klopack ET, Gibbons FX, Beach SRH, Simons RL. PMID: 30822237.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    43. Evaluating Observer Ratings: The Case of Measuring Neighborhood Disorder. J Appl Meas. 2019; 20(4):405-425. Ong ML, Engelhard G, Klopack ET, Simons RL. PMID: 31730547.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    44. Life Course Trajectories of Negative and Positive Marital Experiences and Loneliness in Later Years: Exploring Differential Associations. Fam Process. 2020 03; 59(1):142-157. Wickrama KAS, O'Neal CW, Klopack ET, Neppl TK. PMID: 30447118.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    45. Puberty and Girls' Delinquency: A Test of Competing Models Explaining the Relationship between Pubertal Development and Delinquent Behavior. Justice Q. 2020; 37(1):25-52. Klopack ET, Simons RL, Simons LG. PMID: 32742073; PMCID: PMC7394434.
      View in: PubMed   Mentions: 6  
    46. The influence of mastery on mother's health in middle years: Moderating role of stressful life context. Stress Health. 2018 Oct; 34(4):552-562. King V, Wickrama KAS, Klopack ET, Lorenz FO. PMID: 29882335; PMCID: PMC6188799.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    47. Invited address: "The times they are a-changin'" gene expression, neuroplasticity, and developmental research. J Youth Adolesc. 2015 Mar; 44(3):573-80. Simons RL, Klopack ET. PMID: 25550091.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
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