The influence of individual and contextual psychosocial work factors on the perception of the indoor environment at work: a multilevel analysis

Purpose  

The aims of this study was to investigate the role of the psychosocial work environment—at the individual level as well as the workplace level—in explaining the variability in the employees’ perception of the indoor environment.     

From deindustrialization to individual health-related quality of life: Multilevel evidence of contextual predictors,mediators and modulators across French regions, 2003

Although small area effects on health-related quality of life (HRQoL) have been extensively studied, less is known at the regional level, particularly in France where no multilevel evidence is available. Using data from a large representative cross-sectional survey conducted in 2003 (N=16 732), this study explores individual and regional determinants of the SF-36 Physical Functioning and Mental Health subscales. We considered a causal pathway leading from deindustrialization to HRQoL and assessed the roles of net migratory flows, deprivation, and the social and physical environments. Worse HRQoL results were found in regions most affected by deindustrialization, with evidence for mediating effects of migration, voter abstention rate and individual health-related behaviors. Cross-level interactions and intraregional heterogeneity were also found, confirming the complexity of individual-area relationships and the need for carefully conceptualized multilevel analyses to guide health policies effectively.     

Multilevel analysis of workplace and individual risk factors for long-term sickness absence

OBJECTIVE: The objective of this study was to examine if psychosocial and physical work-environment factors predict long-term sickness absence (>8 weeks) at both the individual and the workplace level. MATERIAL AND METHODS: Data were collected in a prospective study in 52 Danish workplaces. Psychosocial factors were aggregated as workplace means. We used multilevel logistic regression models with psychosocial factors as predictors of long-term sickness absence over 5 years based on data from a national absence register. RESULTS: Long-term sickness absence was predicted by physical work-environment factors at the individual level and psychosocial work environment factors at the workplace level. Interaction between the individual physical and workplace-level psychosocial risk factors was found. CONCLUSION: Workplace-based absence reduction interventions can be enhanced by concurrently addressing the individual and the workplace level.     

Sickness absence with psychiatric diagnoses: individual and contextual predictors of permanent disability

Sickness absence due to psychiatric problems is on the increase. Many sickness absentees do not recover and end up on a permanent disability pension (DP). A prospective cohort study of 12,283 women and 7099 men with a spell of sickness absence longer than 8 weeks, certified with a psychiatric diagnosis, was carried out. Diagnoses and socioeconomic data for each case were obtained from a national insurance research database. Socio-demographic data characterising each of Norway's 19 counties were obtained from Statistics Norway, and a deprivation index was constructed. Cox regression models with county-level variables only and combinations of variables at individual and county level were estimated separately for each gender as predictors of DP. Men had the highest risk of disability. Several individual-level variables predicted permanent disability. Contextual factors had a marginal effect among women also, after adjustment for individual-level variables. No such effect was present among the men.     

Multilevel analysis of individual and community predictors of smoking prevalence and frequency in China: 1991-2004

This study uses a series of nationally representative samples from China. We studied more than 4,000 households to explore factors associated with both the prevalence and the frequency of cigarette smoking over 13 years between 1991 and 2004. By introducing variables at both the individual and the community level, we found that some key variables are consistent predictors of smoking measures over time, thus they should be the targets of future intervention/prevention programs.     

Personal factors and working conditions as predictors of work injuries among industrial workers

The purpose of this study was to determine the personal factors and working conditions that predict work injuries among industrial workers. To fulfill this aim, a case control study was conducted including 2003 industrial workers who sustained a work injury and an equal number of controls. All were subjected to an interview questionnaire to collect relevant information. Moreover, records were reviewed to obtain the medical history of enrolled workers. Data revealed that workers in the index and control groups are comparable in respect to their sociodemographic characteristics. The multivariate logistic regression analysis pointed out that safety training significantly reduces the risk of work accidents among industrial workers. On the other hand, work accidents are more likely to occur in the main working shift. Moreover, workers who suffer from chronic health problems calling for surgical treatment, as well as those who reported family problems, are more likely to experience work accidents. These workers should receive considerable attention to reduce the extent of work injuries. More importantly, safety-training programs are mandatory for accident prevention in industrial settings.     

Physical workplace factors and return to work after compensated low back injury: a disability phase-specific analysis

Little is known about predictors of duration of work disability (DOD). This cohort study of 433 workers' compensation claimants estimated DOD for job, injury, and demographic factors during consecutive disability phases using Cox regression analysis. DOD was calculated from administrative records. Results show that DOD increases with the time spent bending and lifting or pushing or pulling heavy objects at work, but it is unrelated to sitting, standing, or vibration. Younger age, longer pre-injury employment, less severe injuries, and a previous back injury predicted shorter disability, the latter factor only during the subacute/chronic disability phases. The effect of injury severity decayed over time. This study demonstrates the usefulness of a phase-specific analysis and shows that physical job and injury factors have a significant and time-varying impact on DOD.     

Combining individual and ecological data to determine compositional and contextual socio-economic risk factors for suicide

The social and economic characteristics of geographic areas are associated with their suicide rates. The extent to which these ecological associations are due to the characteristics of the people living in the areas (compositional effects) or the influence of the areas themselves on risk (contextual effects) is uncertain. Denmark's Medical Register on Vital Statistics and its Integrated Database for Longitudinal Labour Market Research were used to identify suicides and 20 matched controls per case in 25-60-year-old men and women between 1982 and 1997. Individual and area (municipality) measures of income, marital and employment status were obtained. There were 9011 suicides and 180,220 controls. Individual-level associations with these risk factors were little changed when controlling for contextual effects. In contrast, ecological associations of increased suicide risk with declining area levels of employment and income and increasing proportions of people living alone were much attenuated after controlling for compositional effects. We found no consistent evidence that associations with individual-level risk factors differed depending on the areas' characteristics (cross-level interactions). This analysis suggests the ecological associations to be attributed to characteristics of the residents rather than area influences on risk.     

Associations between individual and contextual factors and smoking in 13,293 Mexican students

OBJECTIVE: Factors correlated with cigarette smoking in young people have yet to be documented in most developing countries. This study assesses the correlates of smoking in Mexican young people. METHODS: School-based, cross-sectional study in the central Mexican state of Morelos during the 1998-1999 school year of 13,293 public school students aged 11 to 24 years. Multinomial logistic regression models were constructed with smoking as the dependent variable. RESULTS: Regular smoking (one or more cigarettes daily) prevalence was 13.1% (95% confidence interval [CI]=12.2-13.9) in males, and 6.1% (95% CI=5.6-6.6) in females. Frequent alcohol intoxication was strongly associated with regular smoking (females, odds ratio [OR]=68.5, 95% CI=37.6-125.2; males, OR=34.5, 95% CI=22.6-52.7). Regular smoking was associated with illegal drug use and smoking by both parents in females, and with illegal drug use in males (males, OR=4.9, 95% CI=3.7-6.5). Also associated with tobacco smoking were high socioeconomic status, low academic achievement, illegal drug use by peers, marijuana use by parents, and depression in adolescents. CONCLUSIONS: This study documents a strong correlation between tobacco smoking and other health risk behaviors, especially alcohol and drug abuse. In young women especially, the risk of tobacco use increased with alcohol abuse and higher socioeconomic status. School-based interventions are needed that focus on preventing smoking and also take into account other unhealthy behaviors.     

Looking upstream to understand low back pain and return to work: Psychosocial factors as the product of system issues

Low back pain (LBP) is the most common and expensive musculoskeletal (MSK) disorder in industrialized countries. There is evidence that personal and occupational psychosocial variables play a more important role than spinal pathology or the physical demands of the job. However, it is unclear which psychosocial variables are most important. The objective of this study is to understand which psychosocial variables are deemed most important to various workplace stakeholders involved in the process of returning a worker with LBP to work. Nine focus groups were convened with injured workers, small and large employers, unions, health and safety associations, physicians and non-physician clinicians, return to work coordinators and compensation board representatives in Ontario, Canada. A qualitative grounded theory approach was applied to explore, from their perspectives, important psychosocial factors that prevent the promotion of early and safe return to work (RTW) for individuals with LBP. While the study began by asking questions related to the various psychosocial factors and their association to LBP and RTW, it took an interesting turn. The majority of study participants described how psychosocial factors were the product of larger systemic/organizational issues. Rather than focusing solely on individual psychosocial factors, respondents described how the context of a much larger system, and the complex interplay between the many different components of that system, contributes directly or indirectly to the treatment of LBP and RTW. It is the interrelationships between these systems that determine the process of returning an injured worker with LBP back to work. Although it is important to understand how psychosocial factors affect RTW, organizational structures within our social context seem to play a role in shaping how all stakeholders see and emotionally respond to LBP and RTW, as well as the degree to which they can envision taking action on them. We need to consider moving beyond a psychosocial conceptualization of LBP and RTW into a sociopolitical and economic conceptualization. This reconceptualization provides insight into the “upstream factors” associated with LBP and RTW.     

Criteria for return to work

Summary This paper presents a step by step crieteria for returning a hypertensive to work. The importance of differential diagnosis of hypertension was discussed in terms of a definitive and proper diagnosis. A table of symptoms was presented to help the determination of the effect of primary hypertension. It was emphasized that in uncomplicated cases of primary hypertension, there is no impairment since impairment is always the result of a complication. Factors influencing prognosis, considerations upon return to work and drug side effects were outlined to guide the industrial physician in the management of the patient upon his return to work. The need for a close cooperative relationship between the patient's own treating physician and the industrial physician to facilitate the proper treatment and management of an illness was stressed.Read before the Thirteenth Annual Western Industrial Health Conference, October 17–18, 1969; San Francisco, California. Supported in part by USPHS Grant 8 TO1 00020-04.Dr. Chook (Major, Medical Corps, United States Army) is currently on assignment at the Occupational Health Division of the United States Army Environmental Hygiene Agency, Edgewood, Maryland 21010. He was formerly with the Occupational Medical Group in the School of Public Health, University of California, Berkeley.The views of the author do not purport to reflect the position of the Department of the Army or the Department of Defense. 8 Int. Arch. Arbeitsmed., Bd. 26     

The probability of recovery and return to work from work disability as a function of time

This paper describes a prospective longitudinal cohort study of musculoskeletal soft tissue pain impairment following a work related injury. It focuses on specific, univariate prognostic factors indicated in previous research studies that might affect the likelihood that injured workers will return to work or remain on work disability at any point in time. These factors include gender, age, return to work attempts and site of injury. Life table analysis was used to model the probability of work disability. The results showed that different disability and return to work patterns emerged for males and females. Males were more likely to return to work; however, females had a higher probability than males of remaining at work once they returned to work. Older workers had the highest probability of being off work any given number of days after injury; were less likely to return to work, and if they did, had a higher probability of becoming disabled again. Efforts to return early to work contributed to a decrease in overall work disability. Workers with low back injuries had a greater likelihood of recurrence compared to injuries at other body sites.Project supported by the Workers' Compensation Board of Ontario and the Institute of Work and Health. Actuary Consultant: Nicolas P. Crook. F.S.A.     

The probability of recovery and return to work from work disability as a function of time

This paper describes a prospective longitudinal cohort study of musculoskeletal soft tissue pain impairment following a work related injury. It focuses on specific, univariate prognostic factors indicated in previous research studies that might affect the likelihood that injured workers will return to work or remain on work disability at any point in time. These factors include gender, age, return to work attempts and site of injury. Life table analysis was used to model the probability of work disability. The results showed that different disability and return to work patterns emerged for males and females. Males were more likely to return to work; however, females had a higher probability than males of remaining at work once they returned to work. Older workers had the highest probability of being off work any given number of days after injury; were less likely to return to work, and if they did, had a higher probability of becoming disabled again. Efforts to return early to work contributed to a decrease in overall work disability. Workers with low back injuries had a greater likelihood of recurrence compared to injuries at other body sites.     

A prospective study of work related factors and physical exercise as predictors of shoulder pain

OBJECTIVES—To evaluate the effects of work related and individual factors as well as physical activity and sports on the incidence and persistence of shoulder pain among forestry workers.
METHODS—Workers in a large Finnish forestry company replied to a questionnaire (a modified version of the Nordic questionnaire) on musculoskeletal pain and its possible risk factors for 4 consecutive years 1992-5. This 1 year follow up study covers the time 1994-5. Year 1994 was chosen as baseline because in that year the questionnaire contained for the first time more detailed questions about different sports. The response rate in 1995 was 90%. The effects of the predictors on 1 year incidence and persistence of shoulder pain were studied with multivariate logistic regression modelling.
RESULTS—At baseline, 2094 subjects had been free of shoulder pain during the preceding 12 months. After 1 year, 14% (n=285) reported having mild or severe shoulder pain. Higher age, obesity, and mental stress as well as physically strenuous work and working with trunk forward flexed or with a hand above shoulder level increased the risk of incident shoulder pain. Of the different sports activities, dancing increased the risk of incident pain whereas jogging decreased the risk significantly. Of those 419 workers who had severe shoulder pain at baseline, 55% (n=230) still had severe pain 1 year later. Higher age, overload at work, and working with a hand above shoulder level increased the risk of persistent severe shoulder pain whereas cross country skiing and general sports activity decreased the risk.
CONCLUSION—Our results support the current view that shoulder pain is the result of many factors, including occupational and individual factors. In this longitudinal study, physical work with a heavy load, awkward work postures, mental stress, and obesity were the risk factors at which preventive measures could be aimed. As a new finding, physical exercise had more protective than impairing effects on the shoulders.


Keywords: mental stress; physical work load; sports     

Differences in predictors for return to work following musculoskeletal injury between workers with and without somatic comorbidities

Purpose

In workers with musculoskeletal injuries, comorbidity is associated with worse return to work (RTW) outcomes. In the context of RTW, it is unclear whether associations between predictors and RTW are similar or different for workers with and without comorbidity. This study aims to investigate differences and similarities between workers with and without comorbidity in 12-month predictors for RTW in workers who are absent from work due to a musculoskeletal injury.

Methods

All workers with lost-time claims who were off work at baseline were selected from the Early Claimant Cohort (Canada) (n = 1,566). Follow-up data on RTW were available of 810 workers after 12 months. Predictors included demographic, health-related, and work-related factors. Differences between coefficients of the groups with and without comorbidity were tested.

Results

Low household income was a predictor for RTW in workers without comorbidity only. Better mental health was a predictor for RTW in workers with comorbidity only. Higher education, less pain intensity, better general health, less bodily pain, better physical health, and a positive supervisor response were predictors for RTW in the total group.

Conclusions

Injured workers with and without comorbidity should be considered as two distinct groups when focusing on mental health or household income.