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PubMed1995

Carpal tunnel surgery outcomes in workers: effect of workers' compensation status.

One hundred thirteen workers' compensation and 53 non-workers' compensation patients who had undergone open carpal tunnel release were queried about job status and the presence or absence of residual symptoms of numbness, pain, or nocturnal awakening an average of 42 months postoperatively. Thirty-nine non-workers' compensation subjects were at their original jobs as compared to only 53 workers' compensation subjects. Seventeen of the workers' compensation subjects were unemployed versus two non-workers' compensation subjects. These differences were significant. Of patients changing jobs, 39 workers' compensation subjects and 2 non-workers' compensation subjects attributed their job change to symptoms of carpal tunnel syndrome. Residual symptoms were significantly more common in workers' compensation compared to non-workers' compensation subjects, with 92 of the former and 26 of the latter subjects reporting some residual symptoms.

Adult↗
PubMed2000

Prevalence of antibody to hepatitis A virus in drinking water workers and wastewater workers in Texas from 1996 to 1997.

To determine if wastewater workers had a higher prevalence of antibody to hepatitis A virus (anti-HAV) than drinking water workers, a convenience sample of Texas wastewater and drinking water workers was evaluated for risk factors by questionnaire and tested for anti-HAV. A total of 359 wastewater and 89 drinking water workers participated. Anti-HAV positivity was 28.4% for wastewater and 23.6% for drinking water workers. After adjustment for age, educational attainment, and Hispanic ethnicity, the odds ratio for the association between anti-HAV positivity and wastewater industry employment was 2.0 (95% confidence interval, 1.0 to 3.8). Among wastewater workers, never eating in a lunchroom, > or = 8 years in the wastewater industry, never wearing face protection, and skin contact with sewage at least once per day were all significantly associated with anti-HAV positivity in a model that adjusted for age and educational attainment. Wastewater workers in this study had a higher prevalence of anti-HAV than drinking water workers, which suggested that wastewater workers may have been at increased risk of occupationally acquired hepatitis A. Work practices that expose workers to wastewater may increase their risk.

Adult↗
PubMed2006

[Ethical opinion survey on the periodical health examination among workers: privacy protection and informed consent on the information of the heath examination among workers in small and medium-sized enterprises].

We investigated the ethical opinions concerning the information on legal regular health examinations with a questionnaire for 757 workers in enterprises that contracted a part-time occupational physician as there were no full-time occupational health professionals. Thirty to 50% of the workers answered that the information on their health examination was known to their superiors and their colleagues. Also, 20 to 40% of the workers answered that the information was made known to other people without obtaining their agreement. This tendency among the group of sick workers was stronger than in the group of healthy workers. On the other hand, the workers who suspected that the information on their health examination might be made available to other people exceeded the majority. In these enterprises, there seemed to be ethical problems from the point of the protection of privacy. It was also shown that the consideration of ethics concerning the protection of the privacy of the information on worker's health examinations was not high. However, it was suggested that the ethical opinion concerning worker's informed consent was high, as there were 85% or more workers who answered that agreement of the workers themselves was necessary for disclosing the information on their medical examination.

Confidentiality↗
PubMed2000

Natural rubber latex aeroallergen exposure in rubber plantation workers and glove manufacturers in Thailand and health care workers in a UK hospital.

OBJECTIVES: To estimate personal airborne natural rubber latex (NRL) concentrations for three occupational exposure groups; rubber plantation workers and NRL glove manufacturers in Thailand and health care workers in the UK. To utilise these data to classify the populations into appropriate exposure groups for the exposure-response analysis in the epidemiological study on latex allergy. METHODS: Two rubber plantations (110 workers), three NRL glove manufacturing factories (583 workers) in Thailand and one UK hospital (490 workers) were selected for the study. A preliminary workplace survey was carried out at each workplace in order to assign job titles subjectively in to high, moderate or low exposure groups for the purpose of sample selection. Between 5 and 20% of workers from each group for the three populations were then selected randomly for personal measurement of latex airborne allergens. Personal sampling was conducted using a 25 mm PTFE filter loaded in to an IOM sampling head at 2 l. min(-1). NRL aeroallergens were measured by an inhibition assay with NRL-specific IgE antibodies from NRL-sensitised people. RESULTS: A total of twenty-two personal samples were collected from plantation workers, sixty-one samples from the glove manufacturer employees and twenty seven from health care workers. The highest geometric mean (GM) NRL aeroallergen concentration was found in the glove manufacturing factories (7.3 microg m(-3)), followed by the rubber plantations (2.4 microg m(-3)) and the UK hospital (0.46 microg m(-3)). Amongst the NRL glove factories, the NRL aeroallergen concentrations were highest for those conducting the following tasks; glove stripping, glove inspections and packing of powdered gloves. The GM NRL aeroallergen for these tasks were in the range of 12.9 to 17.8 microg m(-3). CONCLUSIONS: In the process from tapping and manufacture of latex gloves through to their use the highest exposure to NRL aeroallergens is likely to occur in the manufacturing factories. Exposure to aeroallergens for the plantation workers was considered to be moderate and that of health care workers to be low.

Agriculture↗
PubMed2000

Increase in airway hyperresponsiveness among workers exposed to methylene diphenyldiisocyanate compared to workers exposed to toluene diisocyanate at a petrochemical plant in Korea.

BACKGROUND: The purpose of this study was to investigate the prevalence of airway hyperresponsiveness induced by methylene diphenyldiisocyanate (MDI) and toluene diisocyanate (TDI) at a petrochemical industry complex in Korea. METHODS: Questionnaires, allergic skin test, and nonspecific airway hyperresponsiveness (AHR) were studied in 64 exposed workers and 27 control subjects. Questionnaires included questions about symptoms of cough, wheezing, chest tightness, dyspnea, rhinorrhea, sneezing, itching, stuffiness, tearing, urticaria, sore throat, and exacerbating time. Methacholine challenge tests were done. Bronchial responsiveness (BRindex) defined as log (% fall in FEV(1))/log (last concentration of methacholine +10). RESULTS: Prevalence of AHR (PC20 FEV(1) < 16.0 mg/mL of methacholine) was higher in MDI-exposed workers than in TDI-exposed workers [4/20 (20%) vs. 2/42 (4.7%), P<0.05]. Twenty-three workers (36%) of all subjects had respiratory symptoms. MDI-exposed workers, in comparison with control subjects, had higher BRindex (0.73+/-0.04 vs. 0.62+/-0.02, P<0.05). Workers exposed to TDI or MDI who had respiratory symptoms (n = 23), in comparison to workers exposed to TDI or MDI without respiratory symptoms (n = 41), had significantly higher BRindex (0.82+/-0.06 vs. 0.60+/-0.02, P<0.05). FEV(1) was significantly negatively correlated with BRindex (r = -0.253, P<0.05). BRindex was not correlated with atopy, smoking status, and exposure duration. CONCLUSIONS: These findings suggest that workers exposed to MDI are at a higher risk of asthma in comparison with TDI-exposed workers and control subjects at a petrochemical plant in Korea.

Adult↗
PubMed1985

Mortality among rubber workers: X. Reclaim workers.

This study evaluated the mortality experience of 1,352 white and 438 nonwhite men who worked in the rubber-reclaiming division of a large rubber manufacturing company. In comparisons of mortality of white reclaim workers with that of nonreclaim workers rate ratios were 2.7 for esophageal cancer (six observed deaths among reclaim workers), 2.1 for bladder cancer (seven observed deaths), and 4.5 for multiple myeloma (six observed deaths). The excess of bladder cancer among white reclaim workers may be associated with their employment in other high-risk areas of the plant, whereas no such explanation was found for the excesses of esophageal cancer and multiple myeloma. Overall, the lung cancer mortality rate of white reclaim workers was similar to the rate of US white males and other white rubber workers. There was a 50% excess of lung cancer deaths among nonwhite reclaim workers compared with other nonwhite rubber workers. However, this observation is based on small numbers, and no firm conclusions can be reached about the risk of lung cancer associated with reclaim operations in this group of rubber workers.

Esophageal Neoplasms↗
PubMed1992

Mutagens in urine sampled repetitively from municipal refuse incinerator workers and water treatment workers.

Municipal refuse incinerator workers may be exposed to mutagenic compounds from combustion gases and particulates during plant operation, maintenance, and ash removal procedures. The frequency of mutagens was measured by the Ames assay in 3 urine samples collected from each of 37 workers in 4 refuse incinerators and 35 (control) workers from 8 water treatment plants during June-August 1990. When comparing the first urine samples contributed by workers in each cohort, incinerator workers had a significantly (p < .05) increased risk of both direct-acting mutagens and promutagens (8/37 or 22% for each mutagen type) compared with water treatment workers (2/35 or 6% for each mutagen type). Smoking within 24 h before urine sampling was not a confounder of these results. Interestingly, there was no significant (p > .05) difference for risk of urinary mutagens or promutagens between the two cohorts when comparing, respectively, the second and third urine samples from each cohort. The repeatability of demonstrating urinary mutagens in individual incinerator workers was poor, suggesting that their exposure was highly variable and/or that these workers modified their exposure (e.g., wore masks) as a consequence of being studied. Factors that influence production of mutagenic compounds during refuse incineration and subsequent worker exposure are discussed.

Adult↗
PubMed2002

Detection of workers sensitised to high molecular weight allergens: a diagnostic study in laboratory animal workers.

OBJECTIVES: To determine whether results from questionnaires, exposure measurements, and laboratory tests, commonly used in occupational health practice, can predict the presence or absence of sensitisation in workers exposed to high molecular weight (HMW) allergens. The study aims to develop and validate a diagnostic rule to predict sensitisation in laboratory animal workers. The main reason for such research is efficiency. METHODS: Baseline data from 551 laboratory animal workers participating in an ongoing cohort study, bridging a period of 3 years, were used for diagnostic research. Data from 472 workers participating in the study during the first period were used to develop a prediction rule; these workers represented the derivation set. Data from 79 workers, participating during the second period, were used to evaluate the rule's performance--the validation set. Serum samples were analysed for specific immunoglobulin E (IgE) antibodies against common and laboratory animal allergens. Questionnaire items, exposure determinants, IgE serology, skin prick tests (SPTs), and lung function tests were analysed, corresponding to diagnostic investigation, in a multiple logistic regression model. The accuracy of the model was evaluated by receiver operating characteristic (ROC) curve analysis, and by comparison of the predicted and observed prevalences. RESULTS: Asthmatic symptoms, (work related) allergic symptoms, sex, occupational exposure to rats, and a positive SPT to common allergens, showed the best performance in discriminating workers at high or at low risk of being sensitised. CONCLUSION: High and low risk categories for work related sensitisation can be distinguished from simple questionnaire data and SPT results. The method can easily be applied in occupational medical practice and may markedly increase the efficiency of occupational health surveillance in laboratory animal workers as well as other workers exposed to HMW allergens.

Adult↗
PubMed2002

Natural rubber latex allergy workers' compensation claims: Washington State healthcare workers, 1991-1999.

Occupational reaction to natural rubber latex experienced by healthcare employees was examined using data of all workers' compensation claims filed by state-insured healthcare employees in Washington State for the period 1991-1999 (n = 65,703). As latex reaction is not a condition for which there are specific identification codes, these claims were estimated by coupling source and nature of injury records that were consistent with reactions to latex. It was found that the claim rate was on average 2.66 per 10,000 state-insured healthcare workers annually. The most common condition experienced was dermal (84.3%), and most common body part affected was the hand (70.0%). Because few claims cited respiratory or conjunctivitis as reaction experienced, little evidence was discovered to support that glove powder acted as a widespread latex allergen transmitter in healthcare environments. Most cases did not require indemnity payment for lost work time (81.2%), suggesting most reactions were minor. The average cost per natural rubber latex claim was $2,759.10, compared to $3,178.18 for the average healthcare worker claim for all causes. Overall, the average cost per state-insured healthcare worker employed during this time was under $0.74 per year. Nursing aides/orderlies were the most frequent healthcare occupation filing a claim (33.2%). The majority of claimants were female (87.9%), and unmarried workers (52.0%) filed slightly more claims than married workers (48.0%). In comparison with other workers' compensation claims filed by healthcare workers during this period, 0.34 percent of the total was potentially related to natural rubber latex, with other common healthcare workplace items cited more frequently as source of occupational injury.

Adolescent↗
PubMed1998

What percentage of workers with work-related illnesses receive workers' compensation benefits?

This study estimates the rate at which workers suffering from occupational illnesses file for workers' compensation lost wage benefits and identifies some of the factors that affect the probability that a worker with an occupational illness will file. A database of reports of known or suspected cases of occupational illness is matched with workers' compensation claims data. Overall, between 9% and 45% of reported workers file for benefits. Data limitations prevent a more precise estimate of this rate, but a large proportion of workers with occupational illnesses clearly does not utilize the worker's compensation system. Logit analysis of a choice-based sample shows that women and employees of small firms are more likely than others to file for worker's compensation and that filing rates vary considerably across industries and diagnostic categories. Acute conditions related to the current job are no more likely to lead to claims than chronic conditions with long latency periods between exposure and development of disease.

Adult↗
PubMed2004

Innovations in the management of child protection workers: building worker resilience.

CPS staff work in a fishbowl. Parents, teachers, advocates, counselors, doctors, and lawyers frequently see themselves as experts in the field of CPS. Yet, few of them have had the experience of a CPS worker telling them how to do their job. The true potential for CPS work will not be realized until our communities decide to increase worker pay and reduce worker caseloads. Yet, if we choose to work under these conditions, it is our responsibility to find ways to survive them. The CPS workers unanimously reported that the overall impact of these progressive management strategies was to significantly reduce their stress. Given the serious threats, criticisms, and outrage thrown daily at CPS workers, it is imperative that managers act first to protect their worker's "best interests." It is my belief that all of the policy deviations described above are ethical. None of them put children at risk. I hope that policymakers will someday change the old-school, management policies that are pervasive within our bureaucracies. I do not promote a wanton disregard for policy compliance; however, I do promote change where change is due. In light of the enormous impact that CPS workers have on children and their families, it is crucial that CPS managers be allowed to create an atmosphere where workers can successfully do their work.

Attitude↗
PubMed1976

Studies on the low back pain among electric construction workers. Report 2. Workers' attitude to the prevention and the treatment of their low back pain.

In the previous report, the author demonstrated that the electric construction workers were exposed to the high risk of low back pain, and discussed on the ways to prevent and to treat their occupational disorders. He concluded that the improvement of their working conditions, especially lessening of the working load, was necessary to prevent occupational low back pain, and that it was the most helpful effect on their low back pain to take a rest on an after the attack of the disorder, while most of the medical treatment without a rest were almost helpless. In this report, the author studied and discussed on the workers' opinions on the ways to prevent and to treat their low back pain, by means of questionnaire-method. The workers examined were classified by whether they had the disorder or not and also by the grades of their working load. The results are as follow: 1. As for preventive measures, it is the most popular opinion that they should take care not to hurt their low back; nevertheless, as a matter of fact, their low back pain has been mainly resulted from overwork. 2. As for necessary means on the attack of low back pain, many workers believe that medical treatment is the most helpful to the disorder. Fewer workers recognize the low back pain as an occupational disorder and have opinion that they should take a rest on the attack of the disorder. 3. There is much discrepancy between the workers' opinions mentioned above and the occupational health doctors' recommendations that it is most desirable to improve the working conditions and to let the workers take a rest. 4. The more seriously they suffer from the disorder, the more practical and reasonable are the contents of their opinions. 5. In order to let these workers take a rest from labour more easily, the employers should recognize their low back pain as an occupational disorder, including offjob-payment.

Adult↗
PubMed1985

Follow-up study on pulmonary function of dust workers: an epidemiological evaluation of discontinued workers of dust operations.

An epidemiologic study on 176 dust workers from various facilities was initiated in 1978. Their mean age was 48.3 years and mean duration of employment was 21.6 years. No workers complained of chronic cough and phlegm. Their chest X-rays were found to belong to Category I of the diagnostic criteria for pneumoconiosis in Japan. Pulmonary function test was performed on these workers, however, 54 workers discontinued taking part in the study by the end of 1979, and 49 workers had discontinued by 1981. A total of 73 workers had a five-year follow-up survey of pulmonary function. Forced expiratory volume in one second divided by forced vital capacity (FEV1.0/FVC) and forced expiratory flow rate at 25% of FVC divided by height (V25/H) were mainly compared by smoking habit, work years, type of job, size of company, and the time when they discontinued their jobs. Predicted percentage values of lung function were used for the adjustment of the influence of workers' ages. Decrement of FEV1.0/FVC and V25/H in the five-year follow-up group were larger than the screening level. The mean values of those functional parameters in the early discontinued group were lower than late discontinued and active working groups. The active working group was considered to be a physically healthy workers' population.

Adult↗
PubMed2004

Effectiveness of community health workers for promoting use of safety eyewear by Latino farm workers.

BACKGROUND: To evaluate The Community Health Worker "promotor de salud" (CHW) model is evaluated as a tool for reducing eye injuries in Latino farm workers. METHODS: In 2001, 786 workers on 34 farms were divided into three intervention blocks: (A) CHWs provided protective eyewear and training to farm workers; (B) CHWs provided eyewear but no training to farm workers; (C) eyewear was distributed to farm workers with no CHW present and no training. RESULTS: Pre- and post-intervention questionnaires demonstrated greater self-reported use of eyewear in all blocks after the intervention (P < 0.0001), with Block A showing the greatest change compared to B (P < 0.0001) and C (P = 0.03); this was supported by field observations. Block A showed the greatest improvement in knowledge on questions related to training content. CONCLUSION: CHWs were an effective tool to train farm workers in eye health and safety, improving the use of personal protective equipment and knowledge.

Accidents, Occupational↗
PubMed1997

Use of outcome instruments to compare workers' compensation and non-workers' compensation carpal tunnel syndrome.

Validated outcome instruments were used to compare treatment outcomes of carpal tunnel syndrome (CTS) in workers' compensation and non-workers' compensation patients. A self-administered questionnaire consisting of the generic Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36) and the disease-specific Carpal Tunnel Syndrome Instrument was mailed to 277 patients randomly selected from all 1050 new patients treated for CTS during a 1-year period. A total of 212 patients (61 workers' compensation and 151 non-workers' compensation) responded to the survey 7-22 (mean, 14) months after the initiation of treatment, yielding a response rate of 76%. Workers' compensation patients had worse mean scores than non-workers' compensation patients in 6 of the 8 SF-36 scales and in the 2 Carpal Tunnel Syndrome Instrument scales, but validating multivariate analysis could not verify significant score differences in any of the scales. Thus, this study could not demonstrate inferior treatment outcomes of CTS in workers' compensation patients as measured by standardized generic and disease-specific outcome instruments.

Activities of Daily Living↗
PubMed1993

Healthy worker effect in a cross-sectional study of lead workers.

To study the role lead may play in the development of renal disease, we performed a cross-sectional study of workers at a lead smelting plant. Renal function was defined based on calculated creatinine clearance using the prevalence of values under the 3rd percentile to compare groups. The prevalence of calculated creatinine clearance values under the 3rd percentile in these workers (n = 1782) as a whole was 2.81%, a result comparable to that which has to be expected for the general population. Closer analysis, however, showed significantly lower prevalence of calculated creatinine clearance under the 3rd percentile in certain subgroups of workers. These subgroups were workers between the ages of 30 and 39, workers over the age of 50, and Belgian workers who had worked in the plant for longer than 10 years. We conclude that these observations once more clearly demonstrate a "healthy worker effect" on the measurement of renal function in this work force, a major problem in epidemiologic cross-sectional studies.

Actuarial Analysis↗
PubMed1985

Mortality among rubber workers: IX. Curing workers.

This research examined mortality among 1,152 white male production workers employed in the tire-curing department of a large rubber manufacturing plant. To determine whether these men had any cause-specific mortality excesses, their experience was compared with that of both the U.S. white male general population and a group of production workers at the same plant who had not worked in the curing division. Both types of comparisons indicated that the curing workers experienced excess mortality from lung cancer. There were 45 deaths from lung cancer among curing workers compared to 24.6 expected based on the age- and calendar period-specific rates of other rubber workers. In addition, the mortality rate ratio for pneumonia was 2.2 for curing relative to noncuring workers. These findings are consistent with the results of other studies and suggest that occupational exposures may have contributed to the development of pulmonary disease among curing workers.

Age Factors↗
PubMed1982

[Occupational health studies on airport transport workers. III. Musculoskeletal complaints and orthopedic disorders of airport transport workers (author's transl)].

In an epidemiologic cross-sectional study, 366 transport workers (age-range: 19-61 years) of a big German airport who are engaged in physical heavy work in unfavorable body positions in narrow freight spaces of airplanes, were investigated with regard to their subjective musculoskeletal complaints through a standardized anamnesis in an interview questionnaire. An additional clinical orthopedic examination was performed in 104 of the transport workers. Back pains were the most frequently reported complaints: at the time of examination 66% of the transport workers reported present back complaints. 57% had experienced previous back syndromes. Increasing age and stature were associated with a higher prevalence of these complaints. Years of exposure to transport work correlated positively with the prevalence of back complaints. After back complaints, knee complaints followed in the prevalence of locomotor complaints (41% of the interviewed workers). The prevalence increased with age and body weight significantly. Neck complaints were reported by 33% of the workers, arm complaints by 41%: again, age increased the prevalence of these complaints significantly. In the standardized clinical orthopedic examination, the prevalence of the functional findings were sometimes higher than in the interview. In contrast to the subjective complaints at the interview, individual factors (age, stature, weight, and work experience in the present occupation) had very little influence on the prevalence of objective findings. The clinical, epidemiologic screening methods employed have proved efficacious in detecting orthopedic disorders in an occupational collective. This study has shown that transport workers with wide discrepancies between body length and the space available in airplane cargo bellies, considerable overweight, or a history of former back syndromes should not be employed. Means to alter cargo belly dimensions in airplanes as well as the increased use of mechanical loading aids and additional training of the workers in proper lifting and carrying of cargo should be taken in to consideration.

Adult↗