Maud Hagman

Self-reported working conditions of VDU operators and associations with musculoskeletal symptoms : a cross-sectional study focussing on gender differences

The aim of the present study was to describe working conditions and the prevalence of musculoskeletal symptoms among male and female VDU operators, and to assess associations between work-related physical and psychosocial exposures and neckand upper limb symptoms by gender. The study population comprised a variety of occupations from both private and public sectors. Data on physical and psychosocial exposures were collected by questionnaires, as were data on musculoskeletal symptoms. Univariate associations between exposures and symptoms affecting the neck and upper limbs were estimated by calculating the prevalence ratios with 95% confidence intervals. We also assessed the potential excess odds ratio attributable to interaction between gender and, one by one, exposure variable. Women (n ¼ 785) used the computer on average 3.9 h/day and men (n ¼ 498) 3.6. Variation of different worktask s was lower among females than among males. Nineteen per cent of the women and 12% of the men did >3 h of continued computer work without breaks (>10 min) at least twice a week. Twice as many women as men experienced high job strain (high demands and low decision latitude). A higher proportion of women than men reported symptoms X3 days the preceding month from the upper body, irrespective of body region. For many of the studied exposures the prevalence of symptoms in one or several body regions was increased with increasing exposure, indicating exposureresponse relationships. Duration of computer work was associated with symptoms among both men and women. Only among men, duration of work with a non-keyboard computer input device was associated with symptoms. Only among women, job strain was associated with symptoms. Time pressure was associated with higher prevalence of symptoms among women. Among men, time pressure was associated with lower prevalence of symptoms. Thus, the associations differed between the genders. Women experienced higher prevalence of symptoms than men in all body regions and they were more often exposed to physical and psychosocial conditions that in previous studies have been considered harmful, than men. Relevance to industry Work-related exposures and the associations between these factors and musculoskeletal symptoms among VDU operators differed in some respect between men and women. This should be considered in intervention programs. The results from this study gives further support to the advice that duration of computer work, time pressure and job strain

Function of the Auditory and Visual Systems, and of Peripheral Nerve, in Rats after Long-Term Combined Exposure to n-Hexane and Methylated Benzene Derivatives. I. Toluene

Rats were exposed to n-hexane, toluene, or toluene together with n-hexane, each solvent 1000 p.p.m. (1000 + 1000 p.p.m. in combined exposure), 21 hr/day, 7 days/week during 28 days. Neurophysiological recordings were made 2 days, 3 months, and one year after end of exposure. A reduction in auditory sensitivity, recorded by click evoked auditory brainstem response, was observed 2 days after exposure to toluene alone, or to toluene together with n-hexane, but not after exposure to n-hexane alone. The reduction lasted one year after the exposure. Three months after combined exposure, a synergistic enhancement of loss of auditory sensitivity was observed in the mixed exposure group. One amplitude in the flash evoked potentials was lowered in the n-hexane exposed group 2 days after exposure. No such reduction was seen after simultaneous exposure to toluene. Exposure to n-hexane alone caused a marked decrease in peripheral nerve conduction velocity 2 days and 3 months after exposure, while exposure to n-hexane together with toluene had only a small effect on this velocity.

Work status, work hours and health in women with and without children

Objectives: The authors studied self-reported health in women with and without children in relation to their work status (employed, student, job seeker or homemaker), work hours and having an employed partner. Methods: The study group comprised of 6515 women born in 1960–1979 who were interviewed in one of the Swedish Surveys of Living Conditions in 1994–2003. Self-rated health, fatigue and symptoms of anxiety were analysed. Results: Having children increased the odds of poor self-rated health and fatigue in employed women, female students and job seekers. The presence of a working partner marginally buffered the effects. In dual-earner couples, mothers reported anxiety symptoms less often than women without children. Few women were homemakers (5.8%). The odds of poor self-rated health and fatigue increased with increasing number of children in employed women, and in women working 40 h or more. Poor self-rated health was also associated with the number of children in students. Many mothers wished to reduce their working hours, suggesting time stress was a factor in their impaired health. The associations between having children and health symptoms were not exclusively attributed to having young children. Conclusions: Having children may contribute to fatigue and poor self-rated health particularly in women working 40 h or more per week. Student mothers and job seeking mothers were also at increased risk of poor self-rated health. The results should be noted by Swedish policy-makers. Also countries aiming for economic and gender equality should consider factors that may facilitate successful merging of work and family life.

Self-Reported Health in Mothers: The Impact of Age, and Socioeconomic Conditions

ABSTRACT The aim of the present analysis was to study health and well-being in mothers compared to women without children, and to analyze potential interactions with age and socioeconomic conditions. The study comprised 5,368 Swedish women born in 1960–1979 who were interviewed in any of the population-based Surveys of Living Conditions during the period 1996–2003. Having children at home was related to self-reported health symptoms and long-standing illness in multiple logistic regression models. The impact of age, cohabitation status, full-time or part-time work, and income level were analyzed. While mothers were less burdened by long-standing illness, partly due to selection mechanisms (a “healthy mother effect”), they experienced worse self-rated health and more fatigue than women without children, and the odds of poor self-rated health and fatigue increased by number of children. Conditions that strengthened the association between motherhood and impaired health were young maternal age, fulltime employment, high income, and being alone. The study indicates a need for improved negotiations between parents regarding a fair share of work and family duties and extended support for lone mothers to prevent adverse health effects in women combining children and work. The results may be useful to policy-makers and employers in developing new policies.

Medically certified sickness absence with insurance benefits in women with and without children

Background: Sickness absence in Sweden is high, particularly in young women and the reasons are unclear. Many Swedish women combine parenthood and work and are facing demands that may contribute to impaired health and well-being. We compared mothers and women without children under different conditions, assuming increased sickness absence in mothers, due to time-based stress and psychological strain. Methods: All women born in 1960–79 (1.2 million) were followed from 1993 to 2003. Information on children in the home for each year was related to medically certified sickness absence with insurance benefits the year after. We used age and time-stratified proportional hazard regression models accounting for the individuals changes on study variables over time. Data were retrieved from national administrative registers. Results: Sickness absence was higher in mothers than in women without children, the relative risks decreased by age, with no effect after the age of 35 years. An effect appeared in lonely women irrespective of age, while in cohabiting women only for the ages 20–25 years. Mothers showed increased sickness absence in all subgroups of country of birth, education, income, sector of employment and place of residence. The relation between number of children and sickness absence was nonlinear, with the highest relative risks for mothers of one child. The upward trend of sickness absence at the end of 1990s was steeper for mothers compared to women without children. Conclusion: Despite the well-developed social security system and child care services in Sweden, parenthood predicts increased sickness absence, particularly in young and in lone women.

Symptoms and clinical findings from the musculoskeletal system among operators at a call centre in Sweden--a 10-month follow-up study.

The musculoskeletal health among 57 operators at 1 call centre in Sweden was studied with 10 monthly follow-ups, parallel to a reference group of 1,226 professional computer users in other occupations. Operators at this call centre were more symptom-loaded than the other professional computer users in spite of their younger age and shorter exposure to computer work. Symptoms were long-lasting or recurrent. Muscle tenderness and nerve affections in the neck- shoulder region were the most common specific findings and diagnoses at medical examination of incident symptom cases. More extensive studies should be done on the working conditions and health status among call centre workers.

Disability pension among young women in Sweden, with special emphasis on family structure: a dynamic cohort study

Objectives The influence of family structure on the risk of going on disability pension (DP) was investigated among young women by analysing a short-term and long-term effect, controlling for potential confounding and the ‘healthy mother effect’. Design and participants This dynamic cohort study comprised all women born in Sweden between 1960 and 1979 (1.2 million), who were 20–43 years of age during follow-up. Their annual data were retrieved from national registers for the years 1993–2003. For this period, data on family structure and potential confounders were related to the incidence of DP the year after the exposure assessment. Using a modified version of the COX proportional hazard regression, we took into account changes in the study variables of individuals over the years. In addition, a 5-year follow-up was used. Results Cohabiting working women with children showed a decreased risk of DP in a 1-year perspective compared with cohabiting working women with no children, while the opposite was indicated in the 5-year follow-up. Lone working women with children had an increased risk of DP in both the short-term and long-term perspective. The risk of DP tended to increase with the number of children for both cohabiting and lone working women in the 5-year follow-up. Conclusions The study suggests that parenthood contributes to increasing the risk of going on DP among young women, which should be valuable knowledge to employers and other policy makers. It remains to be analysed to what extent the high numbers of young women exiting from working life may be counteracted by (1) extended gender equality, (2) fewer work hours among fathers and mothers of young children and (3) by financial support to lone women with children.

Working Conditions and Musculoskeletal Disorders among Male and Female Computer Operators

The rapid development of information technology has entailed extensive and decisive changes in the working life. Swedish statistics show that more than half ofthe Swedish working population, 58% of the me” and 54% of the women, “se personal computers at work. The relative frequency of users has increased rapidly du-ing the last 10 years and is supposed to continue to increase. The time spent in front of the visual display “nits (VDUs) is also increasing. One fourth of the working population use VDUs 50% or more oftheir working time. There has also been a rapid increase in the “se of computer mouse and other pointing devices (Statistics Sweden and National Board of Occupational Safety and Health 1997). This development could be connected not only to a” increase of constrained sitting with sustained awkward postures and repetitive hand motions but also a” increase of symptoms from the neck and upper extremities. Of all reported injuries regarding musculoskeletal diseases in Sweden “work with computer or mouse” was reported as the cause ofthe problems anmng 13% of the women and 4% of the men in 1998, compared with 6% and I%, respectively, in 1992 (ISA 1998).