| 1. |
- Jackson, Jennie, et al.
(författare)
-
Occupational risk factors for hospitalization due to cervical disc disorder in a 29-year prospective study of Swedish male construction workers
- 2019
-
Ingår i: PREMUS 2019. ; , s. 168-168
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Background: The aim of this study was to assess the associations between individual and occupational exposure factors and hospitalization for cervical disc disorder (CDD).Methods: CDD was examined prospectively in a cohort of 278 319 Swedish male construction workers who participated in a national health surveillance program (1971-1993). Job title, smoking status, age, height, and weight were recorded on examination. Case data were obtained through linkage with the Swedish national in-patient hospital registry for the period 1987 – 2016; case status was defined by primary diagnosis code M50.0 (ICD-10) or 722.0, 722.4, or 722.7 (ICD-9). A job exposure matrix was developed and occupational exposure estimates were assigned by job title. Self-reported estimates of pain/discomfort from a subset of 87 500 workers were also linked to the database. Poisson regression models were used to estimate the relative risks (RR) for the biomechanical and self-reported factors with adjustment for smoking status, age, BMI and surgical time period.Results: There were 562 cases of hospitalization for CDD; the incidence rate was 8.0 cases per 100 000 during the 29-year follow-up period. Smoking status, age, BMI and height were all associated with increased risk (RR 1.21-3.16). Occupational exposure to static work in non-neutral or extreme neck postures, and time spent in awkward postures showed the highest associations with CDD hospitalization (RR = 1.62 – 2.10). Upper arm load and time with arms above shoulders were also associated with increased risk (RR = 1.50 – 1.58). Workers who reported experiencing pain ‘often’ or ‘very often’ during the previous year for any of the neck, shoulder or upper back regions had a 3-fold increase in risk relative to workers reporting no pain.Conclusions: Occupational non-neutral neck posture was associated with increased risk of hospitalization for CDD. Our data also suggest an exposure-response relationship for self-reported neck pain/discomfort and risk of hospitalization for CDD.
|
|
| 2. |
- Lewis, Charlotte A., et al.
(författare)
-
Occupational biomechanical risk factors for surgical treatment of subacromial impingement syndrome (SIS) in a 16-year prospective study among male construction workers
- 2019
-
Ingår i: PREMUS 2019. ; , s. 165-165
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Background: Shoulder disorders are common in the general population, with an annual prevalence up to over 40% per 1000 person-years. One common disorder is subacromial impingement syndrome (SIS), where a narrowing in the subacromial space causes compression of the tendons or bursa by the surrounding tissues. When conservative treatments are not effective, surgical treatments is often the alternative. The aim of the current study was to assess the association between occupational biomechanical exposures and the occurrence of surgically treated SIS in a large construction worker cohort over a 16-year follow-up period. Methods: A cohort of 280 747 male construction workers who participated in a national occupational health surveillance program (1971-1993) were examined prospectively (1987-2016) for SIS. SIS case status was defined by primary surgical treatment of diagnosis codes M75.1, M75.4, 726B, or 726C (ICD 10 and Swedish ICD 9 code systems), with data from the Swedish national registry for in- and out-patient surgery records. A job exposure matrix (JEM) was developed and biomechanical exposure estimates were assigned according to job title. Poisson regression models adjusted for age, BMI, smoking and a surgical time factor were used to estimate the relative risks (incidence rate ratios) of surgical treatment for SIS for each biomechanical factor.Results: There were 1381 cases in the cohort, which corresponded to an incidence rate of surgically treated SIS over the 16-year observation period of 46 cases per 100,000 person years. Increased risk for surgically treated SIS was shown for working with elevated arms (RR=1.27, 95% CI=1.02-1.58), heavy upper arm loads (RR=1.75, 95% CI=1.48-2.08), high grip force (RR=1.64, 95% CI=1.40-1.93), working with hand tools (RR=1.46, 95% CI=1.26-1.70), working with hand tools in a fixed posture (RR=1.28, 95% CI=1.14-1.44), and working with hand-arm vibration (RR=1.30, 95% CI=1.09-1.55).Conclusions: Working with elevated arms, high arm load, high grip force and vibrating handheld tools may increase the risk for SIS.
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
|
|
| 6. |
|
|
| 7. |
- Mathiassen, Svend Erik, et al.
(författare)
-
Influence of task proportion errors on the effectiveness of task-based job exposure modeling
- 2016
-
Konferensbidrag (refereegranskat)abstract
- Background.Job-based exposure estimation using the occupational mean (JBM) is associated with substantial error. Many studies have therefore estimated job exposures from workers’ tasks, i.e. task-based modeling (TBM), typically by combining individual workers’ task proportions (TP) in the job with a general task exposure matrix. Studies of postures and muscle activity have, however, shown that TBM may be ineffective; one possible reason being that TPs are not correct. The present simulation study investigated the influence of random and systematic TP error on TBM performance.Methods.We constructed two virtual two-task jobs with task exposure contrasts of 0.2 and 0.8. In both, TPs and task exposures mimicked likely occupational scenarios. We then simulated four cases of TP error: no error, random error, bias, and bias and random error. For each case, we varied the TP error size, and compared the absolute errors of TBM- and JBM-based job exposures for 10,000 virtual workers.Results.For the low-contrast job, TBM with error-free TPs was, on average, only 6% more efficient than JBM, and the probability of TBM leading to a more correct job exposure than JBM was 56%. TP errors had negligible effects on effectiveness. With error-free TPs in the high-contrast job, TPM was 75% more efficient than JBM, and led to more correct job exposures for 71% of all workers. TP errors decreased TBM performance, down to being 34% better than JBM when both random and systematic errors were “large”; 62% of all individuals being more correctly assessed by TBM.Discussion.For jobs with limited task exposure contrast, TBM was essentially equivalent to JBM, while TP errors had marginal impact. In high-contrast jobs, TBM was more effec-tive, but was also more sensitive to both random and systematic TP errors. This may feed further discussion of the cost-efficiency of TBM in occupational settings.
|
|
| 8. |
- Rissen, Dag, et al.
(författare)
-
Psychosocial work environment, stress symptoms and musculoskeletal pain among professional Swedish big band musicians
- 2022
-
Konferensbidrag (refereegranskat)abstract
- Background: The psychosocial work environment among musicians can be demanding due to factors such as high job demands, low control, and lack of social support. At the same time, musical performance is physically demanding, and musculoskeletal pain is common. However, few studies have investigated health situation among jazz musicians. Research questions: How do Swedish big band musicians perceive the psychosocial work environment? What are the levels of stress symptoms? Are there any differences in these variables between those with or without playing related musculoskeletal pain? Methods: Three professional big bands in Sweden participated in this cross-sectional questionnaire study. Thirty-two of 35 musicians (mean age 45.4years (SD 10.1); 30 male) participated. A questionnaire including the Nordic Musculoskeletal Questionnaire, additional questions about playing related musculoskeletal pain (PRMD), Demand-Control-Support Questionnaire, and The Copenhagen-Psychosocial-Questionnaire, was used. Mann-Whitney U test was used to compare musicians with or without PRMD. P-value was set at <.05. Results: Level of demands at work (median: 11.5, IQR: 2) was lower than control (median: 18.0, IQR:3). Job strain (i.e. demands/control) had a median value of 0.65 (IQR: 0.14). Level of social support was 19.5 (IQR: 4). Emotional- (median: 7.0, IQR 2), cognitive- (median: 6.0, IQR: 3) and somatic- (median: 6.0, IQR: 3) stress symptoms were approximately at the same levels. Eight of 32 musicians had PRMD during the last 7 days. The groups did not differ significantly in any of the studied variables. Summary of content: The psychosocial work environment of these jazz musicians seems to be favorable since the perceived control is higher than the demands. Compared with professional symphony orchestra musicians, the stress symptoms are similar to (1), who used percent scores. No significant differences were foundation between musicians with or without PRMD. Significance: The psychosocial work environment may differ between different groups of musicians. More research is warranted to explore these potential differences, with a special focus on groups less investigated.
|
|
| 9. |
|
|
| 10. |
- Wahlström, Jens, 1972-, et al.
(författare)
-
Occupational risk factors for surgically treated carpal tunnel syndrome : a prospective cohort study of 220,610 Swedish construction workers
- 2019
-
Ingår i: PREMUS 2019. ; , s. 141-141
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Background: Carpal tunnel syndrome (CTS) is the most common upper extremity nerve entrapment syndrome . The aim of this study was to determine the association between occupational biomechanical exposures and occurrence of surgically treated CTS in construction workers over a 16-year follow-up.Methods: A cohort of 220 610 male construction workers who participated in a national occupational health surveillance program (1971–1992) were examined prospectively (2001–2016) for surgically treated CTS. Cases were determined via a linkage with the Swedish Hospital Outpatient Register. Job title (construction trade), smoking status, height, weight and age were recorded on examination. Job titles were merged into occupational groups of workers performing similar work tasks and having similar training. Occupational biomechanical exposure estimates were assigned to each occupational group using a job exposure matrix (JEM) developed for the study. Poisson regression models were used to assess the relative risks for each biomechanical exposure. Relative risks were adjusted for age, surgical time period, BMI, and smoking status at first examination.Results: There were 4048 cases of surgically treated CTS within the cohort which represented an incidence rate of 134 cases per 100 000 person years. Workers exposed to medium and high forceful handgrip factors had relative risks of 1.3 (95% CI 1.16-1.38) and 1.6 (95% CI 1.50-1.77), respectively, of undergoing surgical treatment for CTS compared to low exposed workers. Workers exposed to medium and high exposure to hand-arm vibration had relative risks of 1.3 (95% CI 1.19-1.34) and 1.2 (95% CI 1.07-1.28), respectively, of undergoing surgical treatment for CTS compared to low exposed workers.Conclusions: In conclusion, forceful hand-grip work and exposure to hand-arm vibration increased the risk for surgically treated carpal tunnel syndrome.
|
|
