Biomedical subjects

Thomas M Wickizer

Publications and source records attributed to Thomas M Wickizer.

At least 19 recordsLinked to original sources

PubMed2007

Prognostic factors of long-term disability in a workers' compensation system.

OBJECTIVE: We identified predictive factors of long-term disability in new workers' compensation claims to guide secondary prevention research and target interventions for high-risk claims. METHODS: Workers with 4 or more days of work disability resulting from workplace injuries were followed for approximately 6 years in a population-based retrospective inception cohort study of 81,077 workers. RESULTS: Predictors of long-term disability included delay between injury and first medical treatment, older age, construction industry, logging occupation, longer time from medical treatment to claim filing, back injury, smaller firm size, female gender, higher unemployment rate, and having dependents. We used logistic and quantile regression to investigate predictors of disability. These models produced consistent information regarding predictors. CONCLUSION: These factors can be used to identify jobs or workers at increased risk for long-term disability that warrant prevention intervention.

Adult↗

PubMed2006

Lumbar fusion outcomes in Washington State workers' compensation.

STUDY DESIGN: Retrospective population-based cohort study. OBJECTIVE: To evaluate the influence of lumbar intervertebral fusion devices on clinical and disability outcomes among Washington State compensated workers with chronic back pain. SUMMARY OF BACKGROUND DATA: The efficacy of lumbar fusion for chronic low back pain remains controversial. Recent randomized controlled trials have shown results of fusion to be equivalent to those of structured exercise and cognitive intervention. Lumbar fusion rates, however, continue to increase nationally, fueled, in part, by introduction of new fusion devices, including intervertebral cages in 1996. It is not known whether these newer devices have improved outcomes, and particularly in compensated workers. METHODS: In this population-based retrospective cohort study, we identified Washington State injured workers who underwent lumbar fusion between 1994 and 2001 from Washington State Workers' Compensation system administrative database. All the data for this study were obtained from either the claims or medical bill payment databases. Multiple logistic regression analyses were used to examine the association between the surgical technique (interbody cages and/or instrumentation) and the risk of disability, reoperation, and complications following lumbar fusion. RESULTS: Among the 1,950 eligible subjects, fusions with cages increased from 3.6% in 1996 to 58.1% in 2001. Overall disability rate at 2 years after fusion was 63.9%, reoperation rate 22.1%, and rate for other complications 11.8%. Use of cages or instrumentation was associated with increased complication risk compared with bone-only fusions without improving disability or reoperation rates. Legal, work-related, and psychologic factors predicted worse disability. Discography and multilevel fusions predicted greater reoperation risk. Degenerative disc disease and concurrent decompression procedures predicted lower reoperation risk. CONCLUSIONS: Use of intervertebral fusion devices rose rapidly after their introduction in 1996. This increased use was associated with an increased complication risk without improving disability or reoperation rates.

Cohort Studies↗

PubMed2006

Worker recovery expectations and fear-avoidance predict work disability in a population-based workers' compensation back pain sample.

STUDY DESIGN: Prospective, population-based cohort study. OBJECTIVES: To examine whether worker demographic, pain, disability, and psychosocial variables, assessed soon after work-related back pain disability onset, predict 6-month work disability. SUMMARY OF BACKGROUND DATA: Greater age, pain, and physical disability, and certain psychosocial characteristics may be risk factors for prolonged back pain-related work disability, although many studies have been small, findings have been inconsistent, and some psychosocial variables have not been examined prospectively. METHODS: Workers (N = 1,068) completed telephone interviews assessing demographic, pain, disability, and psychosocial variables 18 days (median) after submitting Workers' Compensation back pain disability claims. Administrative measures of work disability 6 months after claim submission were obtained. RESULTS: At 6 months, 196 workers (18.4%) were receiving work disability compensation. Age, race, education, and baseline pain and disability were significant predictors of 6-month disability. Adjusting for baseline demographics, pain, disability, and other psychosocial variables, high work fear-avoidance (odds ratio, 4.6; 95% confidence interval, 1.6-13.7) and very low recovery expectations (odds ratio, 3.1, 95% confidence interval, 1.5-6.5) were significant independent predictors. CONCLUSIONS: Among individuals with acute work-related back pain, high pain and disability, low recovery expectations, and fears that work may increase pain or cause harm are risk factors for chronic work disability.

Adolescent↗

PubMed2006

Factors associated with early opioid prescription among workers with low back injuries.

UNLABELLED: Prescription of opioids for nonmalignant musculoskeletal pain has increased substantially in recent years, but there is little information on the incidence of, or factors associated with, such prescription for work-related back pain. In a prospective cohort study (N = 1,067), we examined associations between worker sociodemographic and other characteristics and opioid prescription within six weeks of the first medical visit for workers' compensation claims for work loss due to back injury. We examined administrative, pharmacy, and worker-reported data. In bivariate logistic regression models, Hispanics were less likely than non-Hispanic whites to receive opioid prescriptions, and very high body mass index, daily tobacco use, greater pain and physical disability, pain radiating below the knee, injury severity categorizations (from medical records) of major sprain and radiculopathy, and worse mental health were associated with opioid prescription. Adjusting for demographics, pain intensity, and physical disability, opiate prescription was significantly associated with daily tobacco use, pain radiating below the knee, and injury severity categories (major sprain and radiculopathy). Knowledge of worker characteristics associated with early opioid prescription may be useful in future studies of the role of early pain treatment in influencing subsequent course of pain and disability among workers with back injuries. PERSPECTIVE: Little is known about patient characteristics that may influence physicians' decisions concerning prescription of opioids for acute back pain. Not surprisingly, workers with more severe back injuries are more likely to be prescribed opioids, but reasons for prescription disparities based on ethnicity and tobacco use warrant further study.

Adult↗

PubMed2006

The effect of substance abuse treatment on Medicaid expenditures among general assistance welfare clients in Washington state.

Little is currently known about the effect of substance abuse treatment on Medicaid expenses and other health care costs for welfare clients. This study examined the association between substance abuse treatment and reductions in medical care expenditures (primarily Medicaid expenses) for General Assistance (GA) welfare clients in Washington State. The treatment group included 3,235 GA clients who received treatment during 2000 or 2001. The comparison group included 4,863 GA clients who needed substance abuse treatment but did not receive it. Substance abuse treatment was associated with a reduction (p < .01) in medical expenses of approximately 2,500 US dollars annually. This estimated savings equaled the cost of treatment and represented approximately 35 percent of the annual Medicaid expenses incurred by GA clients with substance abuse problems.

Adult↗

PubMed2006

Family physician resource use for inpatient care: a comparison between military medical center and community hospital.

OBJECTIVE: Family physicians' use of resources in different inpatient settings has not been explored. The hypothesis is that family physicians use fewer resources in a community hospital than in a medical center. METHODS: Patients consecutively discharged from the family practice services of an academic medical center and a community hospital (5,060) were compared with respect to length of stay, testing, and consultation rate. RESULTS: The military academic medical center had an increased average length of stay, diagnostic testing, and consultations on univariate analysis. However, on multivariate analysis, length of stay was no different but the laboratory testing and consultation rate were higher for the academic center. CONCLUSION: Family physicians at this military academic medical center used more testing and requested consultations more often than those practicing in a community hospital, controlling for patient demographics and illness severity. There may be a culture at the academic center that encourages increased use of resources.

Adult↗

PubMed2005

Alcohol interventions for trauma patients treated in emergency departments and hospitals: a cost benefit analysis.

OBJECTIVE: To determine if brief alcohol interventions in trauma centers reduce health care costs. SUMMARY BACKGROUND DATA: Alcohol-use disorders are the leading cause of injury. Brief interventions in trauma patients reduce subsequent alcohol intake and injury recidivism but have not yet been widely implemented. METHODS: This was a cost-benefit analysis. The study population consisted of injured patients treated in an emergency department or admitted to a hospital. The analysis was restricted to direct injury-related medical costs only so that it would be most meaningful to hospitals, insurers, and government agencies responsible for health care costs. Underlying assumptions used to arrive at future benefits, including costs, injury rates, and intervention effectiveness, were derived from published nationwide databases, epidemiologic, and clinical trial data. Model parameters were examined with 1-way sensitivity analyses, and the cost-benefit ratio was calculated. Monte Carlo analysis was used to determine the strategy-selection confidence intervals. RESULTS: An estimated 27% of all injured adult patients are candidates for a brief alcohol intervention. The net cost savings of the intervention was 89 US dollars per patient screened, or 330 US dollars for each patient offered an intervention. The benefit in reduced health expenditures resulted in savings of 3.81 US dollars for every 1.00 US dollar spent on screening and intervention. This finding was robust to various assumptions regarding probability of accepting an intervention, cost of screening and intervention, and risk of injury recidivism. Monte Carlo simulations found that offering a brief intervention would save health care costs in 91.5% of simulated runs. If interventions were routinely offered to eligible injured adult patients nationwide, the potential net savings could approach 1.82 billion US dollars annually. CONCLUSIONS: Screening and brief intervention for alcohol problems in trauma patients is cost-effective and should be routinely implemented.

Alcoholism↗

PubMed2004

Prediction of chronic disability in work-related musculoskeletal disorders: a prospective, population-based study.

BACKGROUND: Disability associated with work-related musculoskeletal disorders is an increasingly serious societal problem. Although most injured workers return quickly to work, a substantial number do not. The costs of chronic disability to the injured worker, his or her family, employers, and society are enormous. A means of accurate early identification of injured workers at risk for chronic disability could enable these individuals to be targeted for early intervention to promote return to work and normal functioning. The purpose of this study is to develop statistical models that accurately predict chronic work disability from data obtained from administrative databases and worker interviews soon after a work injury. Based on these models, we will develop a brief instrument that could be administered in medical or workers' compensation settings to screen injured workers for chronic disability risk. METHODS: This is a population-based, prospective study. The study population consists of workers who file claims for work-related back injuries or carpal tunnel syndrome (CTS) in Washington State. The Washington State Department of Labor and Industries claims database is reviewed weekly to identify workers with new claims for work-related back injuries and CTS, and these workers are telephoned and invited to participate. Workers who enroll complete a computer-assisted telephone interview at baseline and one year later. The baseline interview assesses sociodemographic, employment-related, biomedical/health care, legal, and psychosocial risk factors. The follow-up interview assesses pain, disability, and work status. The primary outcome is duration of work disability over the year after claim submission, as assessed by administrative data. Secondary outcomes include work disability status at one year, as assessed by both self-report and work disability compensation status (administrative records). A sample size of 1,800 workers with back injuries and 1,200 with CTS will provide adequate statistical power (0.96 for low back and 0.85 for CTS) to predict disability with an alpha of.05 (two-sided) and a hazard ratio of 1.2. Proportional hazards regression models will be constructed to determine the best combination of predictors of work disability duration at one year. Regression models will also be developed for the secondary outcomes.

Activities of Daily Living↗

PubMed2004

The association between pain and disability.

A clearer understanding of how pain intensity relates to disability could have important implications for pain treatment goals and definitions of treatment success. The objectives of this study were to determine the optimal pain intensity rating (0-10 scale) cutpoints for discriminating disability levels among individuals with work-related carpal tunnel syndrome (CTS) and low back (LB) injuries, whether these cutpoints differed for these conditions and for different disability measures, and whether the relationship between pain intensity and disability was linear in each injury group. Approximately 3 weeks after filing work injury claims, 2183 workers (1059 CTS; 1124 LB) who still had pain completed pain and disability measures. In the LB group, pain intensity rating categories of 1-4, 5-6, and 7-10 optimally discriminated disability levels for all four disability measures examined. In the CTS group, no pain intensity rating categorization scheme proved superior across all disability measures. For all disability measures examined, the relationship between pain intensity and disability level was linear in the CTS group, but nonlinear in the LB group. Among study participants with work-related back injuries, when pain level was 1-4, a decrease in pain of more than 1-point corresponded to clinically meaningful improvement in functioning, but when pain was rated as 5-10, a 2-point decrease was necessary for clinically meaningful improvement in functioning. The findings indicate that classifying numerical pain ratings into categories corresponding to levels of disability may be useful in establishing treatment goals, but that classification schemes must be validated separately for different pain conditions.

Adult↗

PubMed2004

Improving quality through identifying inappropriate care: the use of guideline-based utilization review protocols in the Washington State Workers' Compensation System.

Utilization review (UR) is widely instituted to ensure that medical treatment is clinically necessary and appropriate. UR programs have been criticized for their failure to promote quality and for relying on proprietary review criteria that are rarely subject to external, independent evaluation or validation. In fashioning its UR program for workers' compensation, the Washington State Department of Labor and Industries sought to address these shortcomings. Working collaboratively with the state medical association, the Department of Labor and Industries developed treatment guidelines and then used these guidelines to formulate review criteria for UR. From 1993 through 1998, 100,005 UR reviews were conducted, half of which used the guideline-based review criteria. We analyzed these reviews to examine the patterns of denied requests. The overall denial rate for the guideline-based reviews was 7.3%. The highest denial rates were for thoracic outlet syndrome surgery (19.1%) and lumbar fusion (17.7%). The use of guideline-based UR protocols may improve the effectiveness of UR as a tool to identify potentially inappropriate care.

Adult↗

PubMed2004

Use of attorneys and appeal filing in the Washington State workers' compensation program: does patient satisfaction matter?

LEARNING OBJECTIVES: Specify the frequency with which injured workers in Washington State's compensation system retained an attorney or filed an appeal, and the personal and job-related correlates of these actions. Analyze the relationship between workers' legal actions and their satisfaction in two domains: how well the claim was managed administratively, and how well the worker and claim manager communicated with one another. Characterize the relationship between retaining an attorney and long-term disability. ABSTRACT: Little is known about how often injured workers retain attorneys or file appeals in the workers' compensation system. We conducted a population-based study to examine the frequency of attorney retention and appeal filing in the Washington State workers' compensation program and the factors related to this event. Data for the study were provided by a survey conducted on 804 injured workers who were interviewed an average of 159 days after claim receipt. Attorney retention and appeal filing were examined up to 28 months later. Seven percent of the workers either retained an attorney or filed an appeal. Workers who were less satisfied with claims administration procedures were more likely to retain an attorney or file an appeal (P<0.05). The average length of time from claim receipt to attorney retention (368 days) suggests that retaining an attorney is a correlate rather than a predictor of long-term disability.

Adolescent↗

PubMed2004

A communitywide intervention to improve outcomes and reduce disability among injured workers in Washington State.

One pressing challenge facing the U.S. health care system is the development of effective policies and clinical management strategies to address deficiencies in health care quality. In collaboration with researchers at the University of Washington, the Washington State Department of Labor and Industries has created a communitywide delivery system intervention to improve health outcomes and reduce disability among injured workers. This intervention is currently being tested in two sites in western and eastern Washington. So far, it appears to be possible to engage physicians and health care institutions in quality improvement initiatives and to form effective public-private partnerships for this purpose. Furthermore, collaborating with university researchers may help enhance the scientific rigor of the quality improvement initiative and create more opportunities for a successful evaluation.

Accidents, Occupational↗

PubMed2004

Do drug-free workplace programs prevent occupational injuries? Evidence from Washington State.

OBJECTIVE: To evaluate the effect of a publicly sponsored drug-free workplace program on reducing the risk of occupational injuries. DATA SOURCES: Workers' compensation claims data from the Washington State Department of Labor and Industries covering the period 1994 through 2000 and work-hours data reported by employers served as the data sources for the analysis. STUDY DESIGN: We used a pre-post design with a nonequivalent comparison group to assess the impact of the intervention on injury risk, measured in terms of differences in injury incidence rates. Two hundred and sixty-one companies that enrolled in the drug-free workplace program during the latter half of 1996 were compared with approximately 20,500 nonintervention companies. We tested autoregressive, integrated moving-average (ARIMA) models to assess the robustness of our findings. PRINCIPAL FINDINGS: The drug-free workplace intervention was associated (p < .05) with a statistically significant decrease in injury rates for three industry groups: construction, manufacturing, and services. It was associated (p < .05) with a reduction in the incidence rate of more serious injuries involving four or more days of lost work time for two industry groups: construction and services. The ARIMA analysis supported CONCLUSIONS: The drug-free workplace program we studied was associated with a selective, industry-specific preventive effect. The strongest evidence of an intervention effect was for the construction industry. Estimated net cost savings for this industry were positive though small in magnitude.

Accidents, Occupational↗

PubMed2004

Patient satisfaction, treatment experience, and disability outcomes in a population-based cohort of injured workers in Washington State: implications for quality improvement.

OBJECTIVE: To determine what aspects of patient satisfaction are most important in explaining the variance in patients' overall treatment experience and to evaluate the relationship between treatment experience and subsequent outcomes. DATA SOURCES AND SETTING: Data from a population-based survey of 804 randomly selected injured workers in Washington State filing a workers' compensation claim between November 1999 and February 2000 were combined with insurance claims data indicating whether survey respondents were receiving disability compensation payments for being out of work at 6 or 12 months after claim filing. STUDY DESIGN: We conducted a two-step analysis. In the first step, we tested a multiple linear regression model to assess the relationship of satisfaction measures to patients' overall treatment experience. In the second step, we used logistic regression to assess the relationship of treatment experience to subsequent outcomes. PRINCIPAL FINDINGS: Among injured workers who had ongoing follow-up care after their initial treatment (n = 681), satisfaction with interpersonal and technical aspects of care and with care coordination was strongly and positively associated with overall treatment experience (p < 0.001). As a group, the satisfaction measures explained 38 percent of the variance in treatment experience after controlling for demographics, satisfaction with medical care prior to injury, job satisfaction, type of injury, and provider type. Injured workers who reported less-favorable treatment experience were 3.54 times as likely (95 percent confidence interval, 1.20-10.95, p = .021) to be receiving time-loss compensation for inability to work due to injury 6 or 12 months after filing a claim, compared to patients whose treatment experience was more positive.

Aged↗

PubMed2004

Policy-relevant research: when does it matter?

Evidence-based medicine is most meaningful to policy makers when research questions are clearly informed by strategic health policy questions. In Washington State workers' compensation, key structural characteristics allow for the conduct of effective policy-relevant research. These include clear authority and a stable funding stream, a formal relationship between a policy agency and a University, development of appropriate research capacity, development of research questions related to strategic goals, and a robust data source. The research conducted relies on computerized medical bills and work disability records, medical records, structured telephone surveys to collect data on pain, functional status, quality of life, and computerized data on employment status. The types of policy-relevant research include identification of factors leading to preventable disability, outcomes research of specific procedures, technology assessment, and "real-time" research that addresses rapidly emerging questions. Health policy changes implemented from research have been substantial in Washington State workers' compensation, including: 1) noncoverage or partial coverage decisions for emerging technologies not proven to be of value to injured workers, 2) formal treatment guidelines and utilization review criteria for invasive, expensive, or marginally effective procedures, 3) disability prevention efforts, and 4) relatively rapid changes in policy as emerging patterns suggest harmful outcomes from existing treatments (e.g., schedule II opioids). Key structural characteristics must be in place to conduct policy-relevant research effectively. The workers' compensation system in Washington State is a single-payer system with other unique properties that have allowed the emergence of these structural characteristics and the conduct of research linked to the strategic goals of policy makers.

Adult↗

PubMed2003

Comparison of the Roland-Morris Disability Questionnaire and generic health status measures: a population-based study of workers' compensation back injury claimants.

STUDY DESIGN: Workers' compensation back injury claimants completed baseline and follow-up telephone interviews in a prospective population-based cohort study. OBJECTIVE: To compare the Roland-Morris Disability Questionnaire (RDQ) to widely used generic health status measures in a sample of workers with recent work-related back injuries in terms of validity, reliability, responsiveness to change, and floor and ceiling effects. SUMMARY OF BACKGROUND DATA: Little research has directly compared the validity and responsiveness of the RDQ to that of the Short-Form 12 or Short-Form 36 health status measures among individuals with back pain. Furthermore, there is little information concerning the validity, reliability, and responsiveness of the RDQ as a measure of functional outcomes for workers with back injuries. METHODS: Approximately 8 weeks (median) after filing low back injury claims, 309 workers completed the RDQ, Short-Form 12, and Short-Form 36 scales and gave information about their work status in computer-assisted telephone interviews. An average of 5 months later, 284 workers (91.9%) completed the measures again. RESULTS: The RDQ demonstrated excellent internal consistency and validity through correlations with other measures of physical functioning, ability to discriminate between those working and those not working, and much more responsiveness to change than the Short-Form 12 and Short-Form 36 scales. However, 15% of the sample did not answer one or more RDQ items. CONCLUSIONS: The RDQ is a valid measure of physical disability among workers with back injuries. Its greater responsiveness to change suggests its superiority to the Short-Form 12 and Short-Form 36 as an outcome measure in this population.

Adolescent↗

PubMed2003

Employer satisfaction with workers' compensation health care: results of the Washington State Workers' Compensation Managed Care Pilot.

Developing more effective approaches to disability prevention has been a longstanding challenge for the workers' compensation system. A major obstacle to this goal has been the lack of communication and interaction between employers and physicians who care for injured workers. From 1995 through 1997, the Washington State Department of Labor and Industries sponsored a major demonstration program, known as the managed care pilot (MCP), to assess the effects of managed care on medical and disability costs, patient satisfaction and employer satisfaction. We developed a telephone survey and administered it to 243 employers as part of the MCP evaluation. Topics covered in this survey include satisfaction with treatment rendered, duration of lost work time, work modifications, and satisfaction with communication received during the employee's recovery period. Employers in the intervention (managed care) condition were more satisfied with the managed care/occupational medicine system than the employers in the comparison group were with the fee-for-service system. MCP employers were satisfied particularly with the frequency and quality of communication received from the health care provider regarding return to work and work modification issues. Improved employer-provider communication may foster early return to work and thereby have a beneficial effect on health and employment outcomes for injured workers.

Fee-for-Service Plans↗

PubMed2002

Improving the quality of occupational health care in Washington State: new approaches to designing community-based health care systems.

The need for concerted action to improve quality was stressed in the recent Institute of Medicine report, Crossing the Quality Chasm: A New Health Care System for the 21st Century. This article describes an innovative community-based delivery system initiative designed to improve quality and health outcomes for occupational health conditions. Known as the Occupational Health Services (OHS) project, this Washington State initiative focuses on three targeted conditions: low back sprain, carpal tunnel syndrome, and fractures. To fulfill its purpose, which is to provide clinical resources and training opportunities and foster quality improvement activities on a community-wide basis, the OHS incorporates several key delivery system components, including systems to track patient and employer satisfaction and health outcomes; formal physician agreements that will provide incentives for using best-practices; and community-based Centers of Occupational Health and Education (COHEs) that will function as a resource for providers, patients, and employers. Our experience in developing the OHS quality improvement initiative should have relevance for health care clinicians, administrators, policy makers, and researchers engaged in similar pursuits outside the field of occupational health.

Accidents, Occupational↗