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PubMed2000

Prioritizing back injury risk in hospital employees: application and comparison of different injury rates.

To identify high risk areas for back injury in a large teaching hospital, we calculated standard injury rates and newly developed composite statistics for nursing and non-nursing work groups. Data were extracted from the hospital's workers' compensation database. The hospital-wide total injury rate was 4.6 reports per 100 full-time equivalents (FTE); Compensation Case Rate, 1.4 cases per 100 FTE; Compensation Severity Rate, 76 days lost per 100 FTE; and the Cost Rate, $3742 per 100 FTE. The Total Injury Reports Rate for nursing varied from 14.2 per 100 FTE for Intensive Care Unit (ICU) Nursing to 3.8 per 100 FTE for Pediatric Nursing. Non-nursing areas also demonstrated increased rates for back injury. Individual statistical rates ranked areas differently in risk, whereas composite statistical measures consistently ranked ICU Nursing, Buildings and Grounds, and Orthopedics/Neurological Nursing as the top three. Patient handling was the precipitating event in the majority of nursing back injuries, indicating the need for ergonomic intervention. The use of combined statistical measures provided a more integrative measure for describing and following back injury risk over time.

Absenteeism↗
PubMed1998

Back injuries in competitive squash players.

BACKGROUND: The aim of this investigation was to examine the prevalence of back injuries in competitive squash players. METHODS EXPERIMENTAL DESIGN: a retrospective analysis was made using a cross-section of current competitive squash players (survivor population). SETTING/PARTICIPANTS: an attempt was made to distribute a questionnaire on back injuries to all competitive squash players registered in the Otago provincial area, New Zealand, (n = 1047), of which 495 questionnaires were returned (47.3% compliance). INTERVENTIONS: variables were cross-tabulated and analysed via descriptive statistics, paired t-tests, chi-analyses of trend and chi 2 tests of significance. MEASURES: the questionnaire obtained information on demographics, the level of play (ability), overall volume of play (average frequency and duration of all exposures), plus the occurrence and severity of back injury. RESULTS: Nearly 52% of the sample reported they had suffered back injury. Of these, 33.5% claimed squash initiated their injury, 20.6% claimed squash exacerbated a previous back injury and the remaining 45.9% felt that squash had no detrimental effect on their back injury. Significantly higher frequencies of back injury were observed in males (56.5% compared to 46.4% in females, p = 0.033), in players of higher grade (p = 0.006),and with increased frequency (p = 0.01), but not duration of play (p = 1.0). CONCLUSIONS: These results suggest that the greater activity and possible over-reaching for the ball associated with higher levels of play may increase the risk of back injury and provides tentative support for the notion that back injuries in squash players might be related to periods of relative over-use.

Adult↗
PubMed1989

Back injuries to fast bowlers in cricket: a prospective study.

Eighty-two high performance young male fast bowlers (mean age 16.8 years) were tested immediately prior to the season for selected kinanthropometric and physiological data. Subjects were also filmed both laterally (200 Hz) and from above (100 Hz) while bowling so that their front foot impacted a force platform during the delivery stride. The players then completed a log book over the ensuing season that detailed their training and playing programmes. All cricket related injuries over this season were assessed by a sports physician who used computerized tomography to assist in the diagnosis of spinal injuries. At the completion of this season the players were grouped according to their injury status (Group 1--bony injury to a vertebra; Group 2--soft tissue injury to the back that caused the player to miss at least one game, and Group 3--no injuries). A one-way analysis of variance was used to identify if any variables were significantly (P less than 0.05) different between the three groups, and a Scheffe post hoc comparison was used to determine which groups were significantly different. Eleven per cent of the players sustained a stress fracture to a vertebra(e) (L4 to S1), while 27 per cent sustained a soft tissue injury to the back. Bowlers with a low longitudinal foot arch were more likely to develop a stress fracture than those with a high arch. Shoulder depression and horizontal flexion strength for the preferred limb and quadriceps power in the non-preferred limb were also significantly related to back injuries. Results suggest that bowlers with the above physical characteristics, who bowl with these biomechanical techniques for extended periods, are predisposed to back injuries.

Adolescent↗
PubMed1996

Concordance between ANSI occupational back injury codes and claim form diagnoses and a lower bound estimate of the fraction associated with disc displacement/herniation.

The current BLS Annual Survey of Occupational Illnesses and Injuries and several recent analyses of factors affecting missed worktime in occupational back injuries rely on ANSI-based injury codes derived from injury narratives to classify occupational injuries and estimate incidence and outcome. No population-based studies of the concordance between back injury codes and clinical diagnoses have been reported. Back injury cases were identified in two large work-injured populations totaling almost 80,000 cases in the states of Michigan and Minnesota. In both populations, cases had been coded by the single nature-of-injury and part-of-body-injured codes assigned by an ANSI-based injury-coding system and by as many as four (Michigan) or three (Minnesota) clinical diagnoses according to the International Classification of Diseases-Clinical Modification, 9th Revision. Concordance was measured by the sensitivity and predictive value positive (PVP, aka PV+ or PPA) of the injury coding scheme for related diagnostic groups. We also used an algorithm based on the limited clinical information available to corroborate the diagnosis of displaced/herniated disc for cases that underwent spinal surgery. Cases identified by the algorithm were then used to obtain a lower bound estimate of the fraction with disc injury. The injury coding scheme had PVPs of 82.9-90.1% and overall sensitivities of 69.7-75.9%. Sensitivities for individual diagnostic groups show that their distribution in ANSI-coded injury groups is skewed slightly toward cases with sprain and disc displacement/herniation, but these shifts are modest. The lower bound estimate of the fraction of cases with disc displacement/herniation in a population of cases with back injuries producing at least 1 day of missed worktime is 5.8%. The demographic comparisons indicate that, as the time between injury and cohort ascertainment increases during the first 8 days of missed worktime following injury, the proportion of younger workers in an injury cohort decreases. The relationship between increasing age and increasing missed worktime disability, reported in various outcome studies, is also present during the first few days following injury. The use of ANSI injury codes underestimates the contribution of back injuries to missed worktime because 24-30% of cases are missed by the ANSI coding system. However, the distribution of diagnostic groups in the injury-coded groups approximates that observed with all diagnosed cases and supports the use of such data to study outcome. Our estimate, and one from Quebec, suggest that disc displacement/herniation occurs more frequently in the subset of occupational back injuries compared to the set of back injuries from all sources.

Adolescent↗
PubMed1999

Predictors of time loss after back injury in nurses.

STUDY DESIGN: A 2-year prospective inception cohort study of back injury in nurses. OBJECTIVES: To determine the extent to which characteristics of nurses, of the injury, and of the workplace predict occurrence and duration of time loss from work after back injury. SUMMARY OF BACKGROUND DATA: During 2 years, 320 nurses incurred 416 back injuries at a large teaching hospital in Winnipeg, Canada. Nurses injured on preselected wards were targeted for early intervention, including provision of modified work, whereas nurses injured on other wards received the usual care. METHODS: Time loss attributable to the back injury during the 6 months after injury was analyzed. Three statistical models were used to examine occurrence of time loss (logistic regression), duration of time loss (Tobit regression), and duration of time loss once an injury incurring time loss had been documented (least-squares regression). RESULTS: In 218 of the 416 injuries, the injured nurse consented to interview. Whereas perceived disability was related to whether a time loss injury would ensue, self-reported pain was strongly related to the duration of time loss once an injury had become a time loss injury. Duration of time loss was reduced by participation in the return-to-work program. Mechanism of injury, specifically injury occurring while lifting patients, resulted in greater time loss. CONCLUSIONS: Focusing on reducing the perception of disability at the time of injury is critical to preventing time loss, but once time loss has occurred, offer of modified work and attention to pain reduction are warranted. The findings add to the evidence that workplace-based intervention programs can be effective in reducing the morbidity resulting from back injury.

Accidents, Occupational↗
PubMed1998

Claim rates of compensable back injuries by age, gender, occupation, and industry. Do they relate to return-to-work experience?

STUDY DESIGN: A retrospective cohort study of Michigan workers' compensation cases involving back injuries in 1986 and 1987 with incidence and outcome data. OBJECTIVE: To determine claim rates by age, gender, and industry or occupation for compensable back injuries and to investigate the relation between occupation and return to work. SUMMARY OF BACKGROUND DATA: The cohort of 24,094 Michigan workers' compensation cases from 1986 and 1987 in which claimants were compensated for back injuries was reviewed. Compensation eligibility requires more than 7 days' disability after injury. METHODS: Claim rates for back injuries by age, gender, and industry or occupation using employment data interpolated from 1980 and 1990 Census 1% Public Use Microdata Samples. Cox proportional hazards analysis was performed for return to work in the first 8 weeks after injury, with occupation coded at the three-digit level. RESULTS: All-age claim rates for Michigan compensable back injuries by occupation ranged between 0.03% and 1.7% annually (0.39% for all cases) and were generally higher in women in white collar occupations and in men in blue collar occupations. The claim rate peaked in men in the 25-34 year range, with the highest rates in manual labor occupations. The peak claim rates by age were less marked in women, tending to occur broadly throughout the 25-44-year range. Similar all-age values were recorded by industry. The male-to-female risk ratio over all occupations does not vary by age and is approximately 1.4:1. As the classification of occupation became more detailed, large differences in risk were documented within major occupation groups. The highest risk in this study was approximately 6% annually for 25-44 year old men in driver-sales (beverage truck drivers and delivery workers). Only 7 of 40 occupation categories showed a significant relative hazard for return to work in the first 8 weeks after injury, and these were blue collar occupations with earlier return than the reference sales category. For Michigan compensable back injuries, a rough estimate of the true annual incidence of new claims is 94% of the reported claim rate. CONCLUSIONS: The relative risk of compensable back injury is generally higher for females in white collar occupations, higher for males in blue collar occupations and approximately equal in service occupations. Although the risk of back injury is related to occupation, the same occupational factors do not operate as a barrier to return to work.

Adolescent↗
PubMedDate not supplied

The use of total quality improvement techniques to determine risk factors for back injuries in hospital workers.

OBJECTIVE: To identify the risk factors for back injuries among hospital employees using quality-management techniques. METHODS: Data from employee-health records were collected from 1993 to 1995 on a total of 100 back injuries. The data were reviewed retrospectively for risk factors using quality-management techniques. RESULTS: We identified two major categories of risk factors: administrative and environmental. The five most common causes of back injuries were as follows: inadequate or lack of proper training in body mechanics, not enough help in lifting, the load being lifted was too heavy, poor condition of the floor surface (slippery or uneven), and the patient was unable to help. The Workers' Compensation costs for the 100 back injuries was in excess of $600,000. CONCLUSION: Based on these findings, several preventive strategies are identified.

Adult↗
PubMed1987

Design and evaluation of a back injury prevention program within a geriatric hospital.

Two phases of a back injury prevention program were studied using 2035 accident reports filed between 1979 and 1984. Phase 1, Personnel Program, was designed to decrease the duration of wage-loss claims by increasing the effectiveness of the existing procedures used to process these claims. This program significantly lowered the proportion of high-hour claims (P less than .05) and significantly reversed a trend of increasing accident rates (P less than .05). Phase 2, Back Program, was designed to lower the incidence of back injuries through a feedback-oriented educational program. The Back Program itself could not demonstrate a significant reduction in back injuries primarily due to the powerful and confounding effect of the Personnel Program. The combination of the Personnel Program and the Back Program significantly lowered back injuries for nurses when compared with a similar group of injuries that occurred at geriatric hospitals (P less than .001). The large effect of the Personnel Program and the small effect of the Back Program have design implications for any injury prevention program.

Aged↗
PubMed1977

Low back injury in sport.

Low back injuries are shown to present a serious hazard to sportsmen and women, and may lead to long-term disability in relation to their sport. Training methods, particularly weight training, led to many of the injuries and it is recommended that personnel involved in training become more aware of these dangers. Spondylolysis was found in 18% of cases and it is suggested that the full investigation of low back pain in a sportsman is incomplete until this lesion has been excluded.

Adolescent↗
PubMed1995

The epidemiology of back injuries in nurses at a large Canadian tertiary care hospital: implications for prevention.

Two years of prospective data on 416 back injuries were gathered at a 1100-bed acute and tertiary care hospital to assist target prevention efforts. The rate of injury among 1645 nurses was found to be highest for those working on orthopaedic, medicine, neurology, spinal and surgery wards, indicating priorities for prevention. In fact, 51% of the orthopaedic nurses sustained at least one back injury during the two-year period. Gender did not significantly affect the risk of back injury; however, injuries were slightly more common in nurses with less seniority and younger nurses were found to be at significantly increased risk of back injury. Almost 63% of the back injuries which occurred in nurses working 8 h shifts on the high-risk wards occurred during the first two hours of the shift. Lifting and transferring patients with assistance were the two most common mechanisms for back injury (22.6% and 23.3%, respectively). In total, injured nurses attributed 52.3% of their injuries to inadequate training; inadequate staffing was given as the primary reason for 13.8% of the injuries. The results suggest that training in the indications for and use of mechanical devices for lifting/transferring patients requires intensification, and a 'warm-up' period should also be considered in the face of injuries occurring early in the shift if work activities cannot be evenly planned.

Adult↗
PubMed1989

[Back injuries and the work site].

Payments through obligatory accident insurance for back injuries as a result of an accident in the legal sense are common. In contrast, the acceptance of back injuries as an occupational illness is associated with such strict legal prerequisites that, considering the early appearance and frequency of degenerative back diseases in the general population, the condition whereby a back injury must have been caused exclusively or predominantly, i.e. at least three quarters, by the occupational activity is satisfied only in rare cases. Epidemiological studies show that back conditions occur more frequently in certain types of exposed occupation. The high degree of causality required by the legislature is, however, not demonstrated so that back injuries could therefore be recognized as occupational illnesses only in rare cases. Because of this, prevention at the place of work is all the more important.

Accidents, Occupational↗
PubMed1991

A case-control study of risk factors for industrial low back injury: implications for primary and secondary prevention programs.

Data were collected on 228 consecutive back injuries in Boston's General Mail Facility and 228 non-injured controls drawn randomly from each case's work unit, matching on craft (clerk, mailhandler, maintenance), shift, and general supervisor. Data were collected on age, gender, duration of employment, 3 year history of injury claims, overtime work in the past 2 weeks, job change in the past 60 days, and machine vs. manual job. Risk factors for back injury were examined simultaneously in a conditional logistic regression for matched pairs. Risk factors included history of back injury claim (OR = 16.5, p less than 0.0001), younger age (OR = 3.0, p = 0.0001), shorter duration of employment (OR = 2.6, p = 0.0007), recent job change (OR = 2.5, p = 0.06), and history of non-back injury claim (OR = 2.0, p = 0.08). Among heavy lifters (vs. clerks) overtime and being female increased the risk of injury. In this setting, higher risk workers who may benefit from preventive education programs can be identified.

Accidents, Occupational↗
PubMedDate not supplied

A field trial of back belts to reduce the incidence of acute low back injuries in New York City home attendants.

To determine the effect of black belt use on the incidence of low back injury in home attendants, a cluster-randomized trial involving employees of nine home attendant agencies in New York City was conducted. Nine agencies employing 12,772 home attendants between June 1997 and September 1999 were randomized into three groups-one group received back belts with use instruction, one group received lifting advice only, and one group served as a control. Low back injury rates per 100 full-time equivalents and rate ratios adjusted for potential confounders were estimated with random-effects Poisson regression. The back-belt group had a lower rate of low back injury than did those in both the advice-only and control groups, though the differences were marginally significant. Age, body mass index, history of back injury, years worked as a home attendant, and level of exercise were associated with risk of low back injury. The findings suggest that use of back belts is associated with some reduction in risk of low back injury.

Adolescent↗
PubMed1993

A case-control study of risk factors for industrial low back injury. The utility of preplacement screening in defining high-risk groups.

Using a cohort of 8183 postal workers, this study assesses the efficacy of preplacement medical examinations in defining the risk of occupational low back injuries. From this cohort, 154 subjects with occupational low back injuries between 1983 and 1988 and 942 control subjects who did not have low back injuries were identified. A multivariate logistic regression shows that a history of prior disability, odds ratio 2.90 (95% confidence interval 1.88-4.48), and a heavy lifting job, odds ratio 1.91 (1.32-276) are associated with occupational low back injuries. However, a history of previous back injury on screening examination is not associated with subsequent occupational injury. The association between a history of disability and occupational low back injury has not been previously noted and warrants further research.

Adult↗
PubMed1990

Australian workers with back injury: a statistical overview.

This paper reviews international and Australian data concerning the occurrence of back injuries amongst the labour force. Analyses of Australian Bureau of Statistics data for the period 1977 to 1986 revealed substantial differences between Australian states in their rates of back injury claims for work injuries, with a decline in rates over the ten years surveyed. Analyses of WorkCare data from the State of Victoria in Australia revealed that claimants with back injury claims of greater than 12 months standing were very costly. A total of 8,633 claimants accounted for 68.7% of all payments for back injury ($362 million out of a total of $527 million) when these claimants represented only 10.7% of all back injury claimants for the period September 1985 to May 1989. Substantial variations were found in claim rates across occupations and age levels. An almost linear (r = 0.98) association was found between age and proportion of long term claimants at each age level. It is suggested that these data could be used to identify 'at risk' groupings with a view to the implementation of preventive measures.

Adolescent↗
PubMedDate not supplied

Short-term efficacy of back injury intervention project for patient care providers at one hospital.

A one-year Back Injury Prevention Program was initiated at a 440-bed acute care hospital in 1996 in response to concerns over high incidence and severity of back injuries among nursing staff and others. The program included an ergonomic evaluation of patient handling, pilot testing and purchase of new equipment, a train-the-trainer program, and training of 374 nurses and other patient handling staff (approximately one-half of the nursing staff). An impact evaluation, measured by comparing self-reported knowledge, work practices, and back pain among a subset of trainees and controls revealed an increase in knowledge of risk factors, a marginal increase in the use of mechanical devices to transfer patients, and a significant decrease in repositioning of patients in bed among trained versus control subjects (p = .017). Over the course of the program, the number of back injuries was 30% below the average of the prior 3 years, with the number of reported injuries in the final quarter (immediately following the training program) approximately one-seventh of the three prior quarters. It is concluded that back injury training may increase knowledge of risk factors and controls and may impact behaviors over which individuals have control (e.g., how often they move patients). However, training effectiveness is limited when engineering controls such as patient transfer devices are unavailable.

Back Injuries↗
PubMed1987

Personal and job-related factors as determinants of incidence of back injuries among nursing personnel.

The purpose of this multicenter prospective cohort study was to assess personal and job-related factors as determinants of incidence of reported back injuries among nurses. The study population included 5,649 nurses who were surveyed by questionnaire and then observed for a 12-month study period. An annual injury rate of 4.9% was observed. Four factors were found to be significant (P less than .01) predictors of back injury. All four factors--service area, lifting, job category, and previously reported back injury--maintain significance when a forward stepping model of logistic regression is applied. The adjusted odds ratios observed are 4.26 for service areas where lifting occurs most as compared with areas where lifting occurs least; 2.19 for daily lifters v light, occasional, and nonlifters; 1.77 for nursing aides v registered nurses and supervisory personnel; and 1.73 for individuals who have previously reported back injury v those who have not reported previous injury. These findings strongly suggest that job-related rather than personal characteristics are the major predictors of back injury in nurses.

Accidents, Occupational↗