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1.
Int Arch Occup Environ Health ; 97(5): 557-567, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38616187

RESUMEN

PURPOSE: Bullying of leaders is an underexplored topic in organizational research. To fill this knowledge gap, the aims of this study were to determine the prevalence of bullying of leaders and to examine whether holding a formal leadership position influences the relationships between exposure to bullying and the outcomes job satisfaction and depression. METHODS: Data from two separate surveys were employed: (1) A cross-sectional occupation specific sample comprising 678 Norwegian child welfare social workers; (2) A nationally representative probability sample of 1,608 Norwegian employees with two time-points (6 months' time-lag). RESULTS: Analyzing multiple indicators of workplace bullying, holding a formal leadership position had no impact on the initial risk of being bullied. Analyses of prospective data showed that leaders report a somewhat stronger increase in levels of bullying over time compared to non-leaders, although the effect size was small. With exception of a small buffering effect on the cross-sectional association between exposure to bullying behaviors and job satisfaction in the second sample, holding a leadership position had no effect on the strength of the association between bullying and outcomes. CONCLUSION: The findings show that leaders have the same risk of being bullied and are influenced by bullying in roughly the same manner as non-leaders. Organizational measures and interventions against bullying should therefore consider leaders as a risk group in line with other employees.


Asunto(s)
Acoso Escolar , Satisfacción en el Trabajo , Liderazgo , Lugar de Trabajo , Humanos , Acoso Escolar/estadística & datos numéricos , Acoso Escolar/psicología , Masculino , Femenino , Noruega , Estudios Transversales , Adulto , Lugar de Trabajo/psicología , Persona de Mediana Edad , Prevalencia , Depresión/epidemiología , Depresión/psicología , Encuestas y Cuestionarios , Estudios Prospectivos
2.
Int Arch Occup Environ Health ; 96(1): 131-141, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35882641

RESUMEN

OBJECTIVE: This study examines how workplace mistreatment relates to insomnia among child welfare workers. The main aim was to determine the impact of three different forms of mistreatment, namely client perpetrated violence, cyber harassment, and colleague perpetrated bullying, on changes in levels of insomnia over time. A secondary aim was to examine whether these three forms of mistreatment represent overlapping or distinct and unique phenomena. METHODS: The study was based on a probability sampled prospective survey of 424 Norwegian child welfare workers. Time lag between baseline and follow-up was six months. A confirmatory factor analysis determined the dimensionality of the indicators of mistreatment. TwoStep cluster analysis was used to examine patterns of exposure. Between and within group changes in insomnia was determined with linear regression analyses and repeated measures ANOVA. Dominance analysis was used to investigate the relative impact the predictor variables had on insomnia. RESULTS: Client perpetrated violence and colleague perpetrated bullying were associated with increased levels of insomnia over time. Exposure to bullying was established as the most prominent predictor. Client perpetrated violence, cyber harassment, and colleague perpetrated bullying represent unique and distinct constructs. Child welfare workers mainly report exposure to one form of mistreatment rather than a combination of different types. CONCLUSIONS: Client perpetrated violence and colleague perpetrated bullying were established as risk factors for insomnia among child welfare workers. Employers and human resource personnel should prioritize developing effective primary, secondary, and tertiary strategies to prevent and handle these hazards and thereby reduce the risk of insomnia among workers.


Asunto(s)
Acoso Escolar , Trastornos del Inicio y del Mantenimiento del Sueño , Violencia Laboral , Niño , Humanos , Estudios Prospectivos , Trastornos del Inicio y del Mantenimiento del Sueño/epidemiología , Lugar de Trabajo , Violencia
3.
BMC Public Health ; 22(1): 47, 2022 01 07.
Artículo en Inglés | MEDLINE | ID: mdl-34996400

RESUMEN

BACKGROUND: Globalization and technological progress have made telework arrangements such as telework from home (TWFH) well-established in modern economies. TWFH was rapidly and widely implemented to reduce virus spread during the Coronavirus disease (COVID-19) pandemic, and will probably be widespread also post-pandemic. How such work arrangements affect employee health is largely unknown. Main objective of this review was to assess the evidence on the relationship between TWFH and employee health. METHODS: We conducted electronic searches in MEDLINE, Embase, Amed, PsycINFO, PubMed, and Scopus for peer-reviewed, original research with quantitative design published from January 2010 to February 2021. Our aim was to assess the evidence for associations between TWFH and health-related outcomes in employed office workers. Risk of bias in each study was evaluated by the Newcastle-Ottawa Scale and the collected body of evidence was evaluated using the the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. RESULTS: We included 14 relevant studies (22,919 participants) reporting on 28 outcomes, which were sorted into six outcome categories (general health, pain, well-being, stress, exhaustion & burnout, and satisfaction with overall life & leisure). Few studies, with many having suboptimal designs and/or other methodological issues, investigating a limited number of outcomes, resulted in the body of evidence for the detected outcome categories being GRADED either as low or very low. CONCLUSIONS: The consisting evidence on the relationship between TWFH and employee health is scarce. The non-existence of studies on many relevant and important health outcomes indicates a vast knowledge gap that is crucial to fill when determining how to implement TWFH in the future working life. SYSTEMATIC REVIEW REGISTRATION NUMBER: PROSPERO registration ID # CRD42021233796 .


Asunto(s)
COVID-19 , Salud Laboral , Humanos , Pandemias , SARS-CoV-2 , Teletrabajo
4.
Int Arch Occup Environ Health ; 93(1): 43-53, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31342156

RESUMEN

PURPOSE: This study examined the protective effects of supervisor, colleague, and non-work-related social support on the associations between workplace bullying, mental distress, and medically certified sickness absence. We hypothesized that social support moderated the direct association between workplace bullying and mental distress as well as the indirect association between bullying and sickness absence through mental distress. We also hypothesized that the protective effects of social support were stronger among women than among men. METHODS: A sample of 10,627 employees was recruited from 96 Norwegian organizations. Workplace bullying, mental distress, and social support were assessed through a questionnaire survey and responses were linked to official registry data on medically certified sickness absence for the year following the survey assessment. RESULTS: The results showed that all three investigated sources of social support moderated the direct association between workplace bullying and mental distress. Supervisor support moderated the indirect association between workplace bullying and sickness absence through mental distress among both male and female respondents, whereas colleague support moderated this indirect association among women only. Non-work-related support had no protective effect on the indirect association. CONCLUSIONS: The findings suggest that social support, and especially supervisor support, is beneficial with regard to reducing the negative impact of workplace bullying on health and work ability of those exposed. Organizations should, therefore, include social support in interventions targeting bullying.


Asunto(s)
Acoso Escolar/psicología , Ausencia por Enfermedad/estadística & datos numéricos , Apoyo Social , Estrés Psicológico/etiología , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Noruega , Estudios Prospectivos , Encuestas y Cuestionarios , Lugar de Trabajo/psicología
7.
J Interpers Violence ; 38(7-8): 5963-5992, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36269025

RESUMEN

This study compared how two different measurement methods of client-perpetrated violence influence findings on prevalence rates and mental health outcomes in a probability sample of 660 Norwegian public sector child welfare workers. Using a single-item self-labeling approach, 15.4% reported exposure to physical violence, and 19.3% reported exposure to threats. Using a 15-item behavioral experience inventory, the prevalence rates ranged from 4.4% to 65.7%. A comparison of these methods uncovered a high number of false negatives when using the single-item approach as 62.2% of those who indicated that they had not experienced any workplace violence when answering the single-item questions reported being exposed 1 to 2 times when responding to the behavioral inventory. Results based on the behavioral inventory further revealed that the most frequently occurring actions in the child welfare service were direct and indirect forms of threats (24.5%-65.7%), while the least reported behaviors were threats and violence including objects (4.4.%-9.1%). Although client-perpetrated violence was significantly associated with mental health problems (e.g., symptoms of anxiety, depression, and post-traumatic stress [PTS]) for both assessment methods, the magnitude of the effect sizes differed from η2 = .000 to η2 = .121. These findings highlight that the use of different measurement methods for workplace violence has significant consequences for the assessment of prevalence rates, as well as on results of associated outcomes. Consequently, the decision on how to assess workplace violence has practical implications for uncovering how prominent the issue is, as well as the way in which this negative workplace exposure is subsequently addressed and counteracted. Therefore, both scholars and the child welfare service, and similar fields in which workplace violence frequently occurs, should take these findings into consideration for future assessments.


Asunto(s)
Violencia Laboral , Niño , Humanos , Prevalencia , Ansiedad , Lugar de Trabajo/psicología , Abuso Físico
8.
Front Psychol ; 13: 907204, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35774968

RESUMEN

This study investigates the role of perceived power relation between target and perpetrator regarding victimization and turnover intent following exposure to bullying behavior at the workplace. We hypothesized that (1) targets of bullying behavior who self-label as victims experiences a larger power imbalance with the perpetrator compared to targets who do not self-label as victims, and (2) that the association between exposure to bullying behavior and intent to leave the job is stronger when there is power balance between target and perpetrator than when there is a power imbalance. The hypotheses were tested in a probability sample of employees working in the child welfare service in Oslo municipality, Norway, and that had been exposed to at least one instance of mistreatment from a colleague at their workplace (N = 374). Targets of bullying behavior whom self-labeled as victims reported a larger power imbalance with the perpetrator. Supporting the study hypothesis, and representing a reverse buffering effect, exposure to bullying behavior was most strongly associated with intent to leave among targets in power balance with the perpetrator. For targets in a perceived power imbalance, both low and high exposure to bullying behavior were associated with higher levels of intent to leave. These findings highlight the importance of implementing measures directed at preventing bullying and other forms of mistreatment, irrespective of the power relation between the two parties.

9.
Waste Manag ; 121: 87-94, 2021 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-33360309

RESUMEN

A valid, standardized tool for assessing workplace safety can help organizations and employers to detect potential safety risks. This is crucial to improve safety and protect employees and production against accidents and injuries. As no such tool has so far been developed for the waste management industry, this study aimed to establish the psychometric properties and the concurrent validity of the 11-item Brief Norwegian Safety Climate Inventory (Brief NORSCI). A cross-sectional questionnaire study was conducted with 543 workers from the formal Norwegian waste management industry. Exploratory and confirmatory factor analyses showed that the Brief NORSCI exhibited good psychometric properties. Replicating previous validation studies of the inventory, the findings suggested a three-factor structure reflecting Individual intention and motivation, Management's prioritization of safety, and Safety routines. The three first-order factors of the inventory could be combined in a composite second-order safety climate factor. Both the overall composite score and the three subscales correlated in the expected directions with measures of job characteristics (i.e., job demands and resources), leadership, social climate, and severe accidents, thus indicating high concurrent validity. This study supported the validity and reliability of the Brief NORSCI as an assessment tool to measure both individual safety perceptions and group level safety climate among waste management workers. The findings suggest that application of the Brief NORSCI as a safety assessment tool may contribute to the development of a stronger safety profile among organizations and companies in waste management.


Asunto(s)
Administración de la Seguridad , Administración de Residuos , Estudios Transversales , Humanos , Noruega , Percepción , Psicometría , Reproducibilidad de los Resultados , Encuestas y Cuestionarios
10.
Front Psychol ; 11: 1401, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32695050

RESUMEN

BACKGROUND: Previous research has established exposure to workplace aggression as a significant risk factor for employee functioning, well-being, and health. However, less is known about effective prevention and management strategies. The main objectives of the current project were to determine the impact of physical and psychological aggression on the well-being, health, and work ability of employees in the child welfare service and to establish whether a strong psychosocial safety climate and an ethical infrastructure are effective with regard to protecting employees against aggression. This project may help identify the specific risks child welfare workers are exposed to, the impact of workplace aggression on their health and well-being, and the most effective strategies to manage the problem. Furthermore, the findings should be central for developing laws and regulations and to any political decision on measures to tackle aggression in the workplace. METHODS: The study will employ two prospective data collections. Firstly, a three-wave longitudinal survey with a 6-month time lag between measurement points will be conducted among all 1,500 employees in the child welfare services in Oslo Municipality, Norway. Data will have a multilevel structure and will be linked to registry data on sickness absence. Secondly, a quantitative daily diary study over a 14-day period will include 150 of the respondents from the main survey study. The survey questionnaires mainly comprise well-established and psychometrically validated indicators of workplace aggression, health and well-being, psychosocial safety climate, ethical infrastructure, and other relevant factors. The Regional Committees for Medical and Health Research Ethics (REC) in Norway (REC South East) have approved this project (project no. 28496). DISCUSSION: This project will identify the impact of workplace aggression on child protection workers as well as provide information on how organizations can actively manage exposure to workplace aggression. The findings may serve as a starting point for intervention studies as well as the development of policies and guidelines on how to handle workplace aggression.

11.
PLoS One ; 14(4): e0215719, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31017947

RESUMEN

Chest pain (CP) is common, frightening, and often medically unexplained. Occupational psychological factors are associated with somatic pain. Personality may influence both perceived working conditions and somatic health, thereby confounding associations of work with health. Despite this, very few studies have investigated the interplay between work factors, personality and pain. The current study assessed relationships of a relatively novel work factor, human resource primacy (HRP), and a personality factor known to be relevant to health, dispositional optimism (Opt), with CP across two years (N = 6714). A series of structural equation models (SEMs) were fitted, modeling "substantive" and "confounded" relationships of psychological factors with CP. A "common latent factor" (CLF) was included to account for bias by unmeasured factors that may have influenced all variables (e.g. reporting bias) and the role of optimism as a possible confounder of the relationship between HRP and CP was investigated specifically. Independent effects of HRP and Opt on CP were observed. No effects of HRP/CP on Opt were observed. Opt appeared to confound the relationship between HRP and CP to some extent. However, best fit was observed for a "reciprocal" model with independent lagged effects from HRP/Opt to CP as well as from CP/Opt to HRP. Thus, results suggested a mutual causal dynamic between HRP and CP along with an influence of Opt on both HRP and CP-implying that working conditions influence the experience of chest pain while the chest pain also influences the experience of working conditions. Optimistic dispositions may influence the experience of both work and pain, but not to an extent that fully explains their relationship. Hence, the notion that associations of HRP with CP are mere artifacts of optimistic/pessimistic reporting was not supported. More likely, complex reciprocal relationships exist between these factors, in which mutual reinforcements occur and both vicious and virtuous cycles may result.


Asunto(s)
Dolor en el Pecho/psicología , Optimismo/psicología , Recursos Humanos , Adulto , Anciano , Dolor en el Pecho/epidemiología , Factores de Confusión Epidemiológicos , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Modelos Psicológicos , Noruega/epidemiología , Salud Laboral , Personalidad , Estudios Prospectivos , Encuestas y Cuestionarios , Adulto Joven
12.
Scand J Work Environ Health ; 44(3): 291-302, 2018 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-29325179

RESUMEN

Objective Despite the multifactoriality of work and health, studies of psychosocial work factors with pain are typically limited to a few factors. This study examined a wide range of factors to determine (i) typical combinations of work factor levels ("work situations") and (ii) whether "work situations" predicted pain complaints of six anatomic regions. Methods Questionnaires were distributed to 6175 employees twice over a two-year period. Latent profile analysis was conducted to group employees into profiles of work factor levels. Twelve work factors were measured, reflecting six themes: demands, control, role expectations, leadership, predictability, and organizational climate. Logistic and Poisson regressions compared the groups' risk of pain of the neck, head, back, shoulders, legs and arms, as well as multi-site pain (>1 pain site). Results Four latent profiles emerged based on relative levels of work factors. Profile 1 reflected relatively "desirable" levels of all factors, demonstrating the lowest risk of pain. Profile 2 exhibited the highest, and profile 3 the lowest levels of both demands and control with similar risks of pain, suggesting high levels of control were insufficient to buffer the impact of the combination of the other factors. Profile 4 exhibited "undesirable" levels of all factors and the highest risk, most notably for multi-site pain [odds ratio (OR) 2.32, 95% confidence intervals (CI) 1.80-2.85 compared with profile 1]. Conclusions Different compositions of psychosocial exposures were differentially related to pain. Future studies should take the complexity of work into account by studying comprehensive arrays of co-occurring work factors with health.


Asunto(s)
Catastrofización/etiología , Estrés Laboral/psicología , Dolor/etiología , Lugar de Trabajo/psicología , Adulto , Catastrofización/prevención & control , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Dolor/psicología , Dimensión del Dolor/métodos , Factores de Riesgo , Encuestas y Cuestionarios , Lugar de Trabajo/organización & administración
13.
PLoS One ; 11(3): e0152220, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27010369

RESUMEN

Occupational health research has mainly addressed determinants of negative health effects, typically employing individual-level self-report data. The present study investigated individual- and department-level (means of each work unit) effects of psychological/social work factors on mental distress and positive affect. Employees were recruited from 63 Norwegian organizations, representing a wide variety of job types. A total of 4158 employees, in 918 departments, responded at baseline and at follow-up two years later. Multilevel linear regressions estimated individual- and department-level effects simultaneously, and accounted for clustering of data. Baseline exposures and average exposures over time ([T1+T2]/2) were tested. All work factors; decision control, role conflict, positive challenge, support from immediate superior, fair leadership, predictability during the next month, commitment to organization, rumors of change, human resource primacy, and social climate, were related to mental distress and positive affect at the individual and department level. However, analyses of baseline exposures adjusted for baseline outcome, demonstrated significant associations at the individual level only. Baseline "rumors of change" was related to mental distress only and baseline "predictability during the next month" was not a statistical significant predictor of either outcome when adjusted for outcome at baseline. Psychological and social work factors were generally related to mental distress and positive affect in a mirrored way. Impact of exposures seemed most pervasive at the individual level. However, department-level relations were also discovered. Supplementing individual-level measures with aggregated measures may increase understanding of working conditions influence on employees`health and well-being. Organizational improvements focusing on the work factors in the current study should be able to reduce distress and enhance positive affect. Furthermore, both targeting individual employees and redesigning working conditions at the work unit level seems important.


Asunto(s)
Afecto , Enfermedades Profesionales/psicología , Estrés Psicológico , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos
14.
Scand J Work Environ Health ; 41(1): 43-53, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25237842

RESUMEN

OBJECTIVES: The aim of this two-wave prospective study was to determine how and when job demands are related to alcohol use among employees. By integrating the Job Demands-Control model with the Tension-Reduction theory, we tested a conditional process (moderated mediation) model in which job demands were suggested to have an indirect association with subsequent alcohol use through psychological distress, and where this association was moderated by perceived job control. METHOD: The model was tested in a prospective sample comprising 3642 respondents from a wide variety of occupations. The time-lag between baseline and follow-up was approximately two years. Work factors were measured with scales from the General Nordic Questionnaire for Psychological and Social Factors at Work. Psychological distress was assessed with the 10-item version of the Hopkins Symptoms Checklist. Alcohol use was measured with a global question about how many units of alcohol respondents consumed in a regular week. RESULTS: Findings from a comprehensive set of both cross-sectional and prospective analyses in both the main sample and specific subgroups provided little support for the proposed theoretical model. While the cross-sectional results yielded some support to the study hypotheses, no support for the theoretical relationships in question were found in the time-lagged data. CONCLUSIONS: Although the cross-sectional findings point to a relationship between the study variables, the investigated relationships were not supported longitudinally. Hence, while job demands and job control are related to alcohol use, they seem to have little direct, indirect, and conditional impact on alcohol use over a two-year time period.


Asunto(s)
Consumo de Bebidas Alcohólicas/psicología , Satisfacción en el Trabajo , Estrés Psicológico/psicología , Adolescente , Adulto , Anciano , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Modelos Teóricos , Estudios Prospectivos , Encuestas y Cuestionarios , Adulto Joven
15.
PLoS One ; 9(7): e102514, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25048033

RESUMEN

Studies exploring psychological and social work factors in relation to mental health problems (anxiety and depression) have mainly focused on a limited set of exposures. The current study investigated prospectively a broad set of specific psychological and social work factors as predictors of potentially clinically relevant mental distress (anxiety and depression), i.e. "caseness" level of distress. Employees were recruited from 48 Norwegian organizations, representing a wide variety of job types. A total of 3644 employees responded at both baseline and at follow-up two years later. Respondents were distributed across 832 departments within the 48 organizations. Nineteen work factors were measured. Two prospective designs were tested: (i) with baseline predictors and (ii) with average exposure over time ([T1+T2]/2) as predictors. Random intercept logistic regressions were conducted to account for clustering of the data. Baseline "cases" were excluded (n = 432). Age, sex, skill level, and mental distress as a continuous variable at T1 were adjusted for. Fourteen of 19 factors showed some prospective association with mental distress. The most consistent risk factor was role conflict (highest odds ratio [OR] 2.08, 99% confidence interval [CI]: 1.45-3.00). The most consistent protective factors were support from immediate superior (lowest OR 0.56, 99% CI: 0.43-0.72), fair leadership (lowest OR 0.52, 99% CI: 0.40-0.68), and positive challenge (lowest OR 0.60, 99% CI: 0.41-0.86). The present study demonstrated that a broad set of psychological and social work factors predicted mental distress of potential clinical relevance. Some of the most consistent predictors were different from those traditionally studied. This highlights the importance of expanding the range of factors beyond commonly studied concepts like the demand-control model and the effort-reward imbalance model.


Asunto(s)
Ansiedad/psicología , Depresión/psicología , Lugar de Trabajo/psicología , Adulto , Ansiedad/epidemiología , Depresión/epidemiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Noruega/epidemiología , Estudios Prospectivos , Factores de Riesgo , Estrés Psicológico , Carga de Trabajo/psicología
16.
Scand J Work Environ Health ; 37(4): 276-87, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21373722

RESUMEN

OBJECTIVES: Using a prospective design, the objective of this study was to determine the relationship between workplace bullying and mental distress. METHODS: Altogether, 1971 Norwegian employees, recruited from 20 organizations, answered questions regarding workplace bullying and mental distress at both baseline and follow-up. Baseline data were gathered between 2004-2006, and follow-up data were gathered between 2006-2009. The time-lag between baseline and follow-up was approximately two years for all the respondents in all the organizations. The factors measured in the study were individual characteristics, mental distress measured with the Hopkins Symptom Checklist (HSCL-10), self-reported workplace bullying measured with a single item from the General Nordic Questionnaire for Psychological and Social Factors at Work (QPSNordic) and job demands and job control assessed by QPSNordic. RESULTS: A multiple linear regression analysis adjusted for mental distress, sex, age, job demands and job control at baseline [ß=0.05, 95% confidence interval (95% CI) 0.03-0.17] and a repeated measures ANOVA adjusted for sex and age [F(3,1965)=38.37; partial η (2)=0.06] showed that workplace bullying predicted mental distress. Furthermore, a multiple binary logistic regression analysis adjusted for bullying, sex, age, job demands and job control at baseline [odds ratio (OR) 2.30, 95% CI 1.43-3.69] showed that mental distress was a predictor of bullying. CONCLUSIONS: We found support for the notion that self-reported workplace bullying is a predictor of mental distress two years later. Bullying had an independent effect on mental distress after adjusting for job demands and job control. Mental distress was also found to be a predictor of bullying, indicating that the reverse relationship is also important.


Asunto(s)
Acoso Escolar/psicología , Estrés Psicológico/etiología , Lugar de Trabajo/psicología , Adulto , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Noruega , Estudios Prospectivos , Estrés Psicológico/psicología , Lugar de Trabajo/estadística & datos numéricos , Adulto Joven
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