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Latent growth mixture modeling

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https://www.readbyqxmd.com/read/27907223/-mental-retirement-trajectories-of-work-engagement-preceding-retirement-among-older-workers
#1
Astrid de Wind, Fenna Rm Leijten, Trynke Hoekstra, Goedele A Geuskens, Alex Burdorf, Allard J van der Beek
Objectives Before actual retirement, employees may already distance themselves from work, which could be referred to as "mental retirement". However, trajectories of work motivation, ie, work engagement, have not been studied yet. The present study aimed to (i) identify different trajectories of work engagement among older workers approaching the retirement age, and (ii) examine their associations with actual retirement. Methods In total 3171 employees aged 55-62 years, who participated in the Dutch Study on Transitions in Employment, Ability and Motivation were included in this study...
December 1, 2016: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/27889856/gender-differences-in-anxiety-trajectories-from-middle-to-late-adolescence
#2
Christine McCauley Ohannessian, Stephanie Milan, Anna Vannucci
Although developmental trajectories of anxiety symptomatology have begun to be explored, most research has focused on total anxiety symptom scores during childhood and early adolescence, using racially/ethnically homogenous samples. Understanding the heterogeneous courses of anxiety disorder symptoms during middle to late adolescence has the potential to clarify developmental risk models of anxiety and to inform prevention programs. Therefore, this study specifically examined gender differences in developmental trajectories of anxiety disorder symptoms (generalized anxiety disorder, panic disorder, and social anxiety disorder) from middle to late adolescence in a diverse community sample (N = 1000; 57 % female; 65 % White), assessed annually over 2 years...
November 26, 2016: Journal of Youth and Adolescence
https://www.readbyqxmd.com/read/27885145/trajectories-of-postpartum-depression-depression-in-italian-first-time-fathers
#3
Sara Molgora, Valentina Fenaroli, Matteo Malgaroli, Emanuela Saita
Paternal postpartum depression (PPD) has received little attention compared with maternal prenatal and postpartum depression, despite research reporting that paternal PPD concerns a substantial number of fathers. History of depression and antenatal depression have been identified as important PPD's risk factors, underlining the continuity of depressive symptoms during the transition to parenthood. However, only few studies have focused on the evolution of depressive symptoms with longitudinal research design...
November 23, 2016: American Journal of Men's Health
https://www.readbyqxmd.com/read/27859946/impact-of-childhood-asthma-on-growth-trajectories-in-early-adolescence-findings-from-the-childhood-asthma-prevention-study-caps
#4
Maria Movin, Frances L Garden, Jennifer L P Protudjer, Vilhelmina Ullemar, Frida Svensdotter, David Andersson, Andreas Kruse, Chris T Cowell, Brett G Toelle, Guy B Marks, Catarina Almqvist
BACKGROUND AND OBJECTIVE: Understanding the associations between childhood asthma and growth in early adolescence by accounting for the heterogeneity of growth during puberty has been largely unexplored. The objective was to identify sex-specific classes of growth trajectories during early adolescence, using a method which takes the heterogeneity of growth into account and to evaluate the association between childhood asthma and different classes of growth trajectories in adolescence...
November 8, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27845522/trajectories-of-posttraumatic-stress-symptoms-after-civilian-or-deployment-traumatic-event-experiences
#5
David S Fink, Sarah Lowe, Gregory H Cohen, Laura A Sampson, Robert J Ursano, Robert K Gifford, Carol S Fullerton, Sandro Galea
OBJECTIVE: Growth mixture model studies have observed substantial differences in the longitudinal patterns of posttraumatic stress symptom (PTSS) trajectories. This variability could represent chance iterations of some prototypical trajectories or measurable variability induced by some aspect of the source population or traumatic event experience. Testing the latter, the authors analyzed a nationally representative sample of U.S. Reserve and National Guard members to identify the influence of civilian versus deployment trauma on the number of PTSS trajectories, the nature of these trajectories, and the proportion of respondents in each trajectory...
June 16, 2016: Psychological Trauma: Theory, Research, Practice and Policy
https://www.readbyqxmd.com/read/27826278/reading-ability-development-from-kindergarten-to-junior-secondary-latent-transition-analyses-with-growth-mixture-modeling
#6
Yuan Liu, Hongyun Liu, Kit-Tai Hau
The present study examined the reading ability development of children in the large scale Early Childhood Longitudinal Study (Kindergarten Class of 1998-99 data; Tourangeau et al., 2009) under the dynamic systems. To depict children's growth pattern, we extended the measurement part of latent transition analysis to the growth mixture model and found that the new model fitted the data well. Results also revealed that most of the children stayed in the same ability group with few cross-level changes in their classes...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27824597/growth-trajectories-and-asthma-rhinitis-in-children-a-longitudinal-study-in-taiwan
#7
Yang-Ching Chen, Tsan-Hon Liou, Pau-Chung Chen, Bor-Luen Chiang, Yao-Hsu Yang, Hsien-Yu Fan, Yungling Leo Lee
Studies have reported the effect of body weight in early childhood on asthma. However, the effect of growth patterns during school age on asthma and rhinitis has yet to be explored. We sought to investigate whether various growth patterns predict incident asthma and rhinitis.We conducted a nationwide longitudinal study (Taiwan Children Health Study) in 14 Taiwanese communities. Body mass index (BMI) z-scores of 4422 children aged 6-11 years were collected annually and distinct growth trajectory classes were identified using a latent generalised mixture model...
October 20, 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/27821366/growth-mixture-modeling-of-post-combat-aggression-application-to-soldiers-deployed-to-iraq
#8
Oscar A Cabrera, Amy B Adler, Paul D Bliese
Prior research has found substantial heterogeneity in the course of key post-deployment outcomes, such as PTSD. The current paper employs growth mixture modeling to identify differential trajectories of change in the course of post-combat aggression. A Brigade Combat Team completed surveys within 72h of return from an Iraq deployment, 4 months later, and at 12 months after return. Based on model fit indices, analyses yielded four latent aggression trajectories: "low-stable", "delayed", "recovery", and "chronic"...
October 18, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27804177/targeted-use-of-growth-mixture-modeling-a-learning-perspective
#9
Booil Jo, Robert L Findling, Chen-Pin Wang, Trevor J Hastie, Eric A Youngstrom, L Eugene Arnold, Mary A Fristad, Sarah McCue Horwitz
From the statistical learning perspective, this paper shows a new direction for the use of growth mixture modeling (GMM), a method of identifying latent subpopulations that manifest heterogeneous outcome trajectories. In the proposed approach, we utilize the benefits of the conventional use of GMM for the purpose of generating potential candidate models based on empirical model fitting, which can be viewed as unsupervised learning. We then evaluate candidate GMM models on the basis of a direct measure of success; how well the trajectory types are predicted by clinically and demographically relevant baseline features, which can be viewed as supervised learning...
November 2, 2016: Statistics in Medicine
https://www.readbyqxmd.com/read/27800579/performance-of-growth-mixture-models-in-the-presence-of-time-varying-covariates
#10
Thierno M O Diallo, Alexandre J S Morin, HuiZhong Lu
Growth mixture modeling is often used to identify unobserved heterogeneity in populations. Despite the usefulness of growth mixture modeling in practice, little is known about the performance of this data analysis technique in the presence of time-varying covariates. In the present simulation study, we examined the impacts of five design factors: the proportion of the total variance of the outcome explained by the time-varying covariates, the number of time points, the error structure, the sample size, and the mixing ratio...
October 31, 2016: Behavior Research Methods
https://www.readbyqxmd.com/read/27796597/heterogeneity-in-perinatal-depression-how-far-have-we-come-a-systematic-review
#11
REVIEW
Hudson Santos, Xianming Tan, Rebecca Salomon
Despite perinatal depression (PND) being a common mental disorder affecting pregnant women and new mothers, limited attention has been paid to the heterogeneous nature of this disorder. We examined heterogeneity in PND symptom profiles and symptom trajectories. Literature searches revealed 247 studies, 23 of which were included in the final review. The most common statistical approaches used to explore symptom and trajectory heterogeneity were latent class model and growth mixture model. All but one study examined PND symptom trajectories and provided collective evidence of at least three heterogeneous patterns: low, medium, or chronic-high symptom levels...
October 29, 2016: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/27793201/identifying-developmental-trajectories-of-body-mass-index-in-childhood-using-latent-class-growth-mixture-modelling-associations-with-dietary-sedentary-and-physical-activity-behaviors-a-longitudinal-study
#12
Maaike Koning, Trynke Hoekstra, Elske de Jong, Tommy L S Visscher, Jacob C Seidell, Carry M Renders
BACKGROUND: To date, many epidemiologic studies examining associations between obesity and dietary and sedentary/physical activity behaviors have focused on assessing Body Mass Index (BMI) at one point in time. Recent developments in statistical techniques make it possible to study the potential heterogeneity in the development of BMI during childhood by identifying distinct subpopulations characterized by distinct developmental trajectories. Using Latent Class Growth (Mixture) Modelling (LCGMM) techniques we aimed to identify BMI trajectories in childhood and to examine associations between these distinct trajectories and dietary, sedentary and physical activity behaviors...
October 28, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27749744/early-adversity-psychopathology-and-latent-class-profiles-of-global-physical-health-from-preschool-through-early-adolescence
#13
Diana J Whalen, Andy C Belden, Rebecca Tillman, Deanna M Barch, Joan L Luby
OBJECTIVE: The purpose of the present report was to describe the longitudinal trajectories of physical health beginning during preschool and continuing into early adolescence; explore whether these trajectories were predicted by psychosocial adversity, family income-to-needs ratio, and psychiatric disorders occurring during the preschool period; and determine whether psychiatric disorders mediated these relations. METHODS: Participants included 296 children participating in a longitudinal study of early-onset psychopathology spanning 10 years...
November 2016: Psychosomatic Medicine
https://www.readbyqxmd.com/read/27720787/associations-between-neurotransmitter-genes-and-fatigue-and-energy-levels-in-women-following-breast-cancer-surgery
#14
Jasmine Eshragh, Anand Dhruva, Steven M Paul, Bruce A Cooper, Judy Mastick, Deborah Hamolsky, Jon D Levine, Christine Miaskowski, Kord M Kober
CONTEXT: Fatigue is a common problem in oncology patients. Less is known about decrements in energy levels and the mechanisms that underlie both fatigue and energy. OBJECTIVES: In patients with breast cancer, variations in neurotransmitter genes between Lower and Higher Fatigue latent classes and between the Higher and Lower Energy latent classes were evaluated. METHODS: Patients completed assessments prior to and monthly for 6 months following surgery...
October 5, 2016: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/27712687/risk-factors-and-outcomes-of-chronic-sexual-harassment-during-the-transition-to-college-examination-of-a-two-part-growth-mixture-model
#15
Meredith McGinley, Jennifer M Wolff, Kathleen M Rospenda, Li Liu, Judith A Richman
A two-part latent growth mixture model was implemented in order to examine heterogeneity in the growth of sexual harassment (SH) victimization in college and university students, and the extent to which SH class membership explains substance use and mental health outcomes for certain groups of students. Demographic risk factors, mental health, and substance use were examined as they related to chronically experienced SH victimization. Incoming freshmen students (N = 2855; 58% female; 54% White) completed a survey at five time points...
November 2016: Social Science Research
https://www.readbyqxmd.com/read/27679674/sick-leave-in-workers-with-arm-neck-and-or-shoulder-complaints-defining-occurrence-and-discriminative-trajectories-over-a-2-year-time-period
#16
A Feleus, H S Miedema, S M A Bierma-Zeinstra, T Hoekstra, B W Koes, A Burdorf
OBJECTIVES: Impediments due to complaints of non-traumatic arm, neck and/or shoulder (CANS) during work often leads to consultation in primary care. This study examines the occurrence of sick leave among workers with new CANS, and evaluates sick leave trajectories and their characteristics. METHODS: This prospective 2-year cohort study included workers with a new CANS presenting in general practice. Participants filled out postal questionnaires on sick leave at 6-monthly intervals...
September 27, 2016: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/27643403/the-impact-of-total-and-partial-inclusion-or-exclusion-of-active-and-inactive-time-invariant-covariates-in-growth-mixture-models
#17
Thierno M O Diallo, Alexandre J S Morin, HuiZhong Lu
This article evaluates the impact of partial or total covariate inclusion or exclusion on the class enumeration performance of growth mixture models (GMMs). Study 1 examines the effect of including an inactive covariate when the population model is specified without covariates. Study 2 examines the case in which the population model is specified with 2 covariates influencing only the class membership. Study 3 examines a population model including 2 covariates influencing the class membership and the growth factors...
September 19, 2016: Psychological Methods
https://www.readbyqxmd.com/read/27602550/latent-trajectories-of-common-mental-health-disorder-risk-across-3-decades-of-adulthood-in-a-population-based-cohort
#18
Diana Paksarian, Lihong Cui, Jules Angst, Vladeta Ajdacic-Gross, Wulf Rössler, Kathleen R Merikangas
Importance: Epidemiologic evidence indicates that most of the general population will experience a mental health disorder at some point in their lives. However, few prospective population-based studies have estimated trajectories of risk for mental disorders from young through middle adulthood to estimate the proportion of individuals who experience persistent mental disorder across this age period. Objectives: To describe the proportion of the population who experience persistent mental disorder across adulthood and to estimate latent trajectories of disorder risk across this age period...
October 1, 2016: JAMA Psychiatry
https://www.readbyqxmd.com/read/27515406/what-factors-affect-the-insomnia-symptom-trajectories-in-women-with-nonmetastatic-breast-cancer
#19
Yuping Wang, Xiongzhao Zhu, Lingyan Li, Jinyao Yi, Jincai He
OBJECTIVES: This study sought to identify the trajectories of insomnia symptoms in Chinese women with nonmetastatic breast cancer and further determine the effects of sociodemographic, disease, and psychological variables on different insomnia symptoms. METHODS: A total of 287 female breast cancer patients were recruited to complete measures of cognitive emotion regulation strategies, perceived social support, and insomnia symptoms at six time points from the week after diagnosis to four months after surgery...
August 8, 2016: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/27503829/bayesian-bent-cable-growth-mixture-tobit-models-for-longitudinal-data-with-skewness-and-detection-limit-application-to-aids-studies
#20
Getachew A Dagne
This paper presents a new Bayesian methodology for identifying a transition period for the development of drug resistance to antiretroviral drug or therapy in HIV/AIDS studies or other related fields. Estimation of such a transition period requires an availability of longitudinal data where growth trajectories of a response variable tend to exhibit a gradual change from a declining trend to an increasing trend rather than an abrupt change. We assess this clinically important feature of the longitudinal HIV/AIDS data using the bent-cable framework within a growth mixture Tobit model...
August 8, 2016: Statistics in Medicine
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