Evaluation of an intervention to reduce playground hazards in Atlanta child-care centers

A systematic review of the risk factors and interventions for the prevention of playground injuries

OBJECTIVES

The primary objectives of this work were to (1) identify the risk and/or protective factors associated with playground injuries among children less than 18 years of age and (2) identify interventions/programs/policies aimed at preventing playground-related injuries among children less than 18 years of age. Secondary objectives include a summary of the data that reflect alignment with current playground standards.

METHODS

For the primary outcome, 4 databases and 12 online resources were systematically searched to include observational and experimental studies examining risk and/or protective factors or interventions associated with playground injury or outcomes related to playground injury (e.g., risky playground behaviour). Data extraction included study design, participants, outcome, exposure or intervention, data analysis, and effect estimates. The quality of evidence for all studies was assessed using the Downs and Black criteria.

RESULTS

This review included studies of moderate quality, revealing a number of risk factors and effective interventions for playground injury. Risk factors included absence of handrails and guardrails on playground equipment, non-impact-absorbing surfacing, and critical fall heights. Effective interventions included modifying playground surfacing and reducing equipment height to less than 1.5 m.

CONCLUSION

Equipment- and structure-based playgrounds should adhere to and maintain playground standards in order to reduce the risk of serious injury. Organizations responsible for installing and maintaining playgrounds should consider alternative play spaces that allow children to play outdoors, in a natural environment that supports healthy child development and promotes physical activity.

Unintentional injuries in child care centers in the United States: a systematic review

The study systematically reviewed all types of unintentional injury and injury prevention research studies occurring within child care centers in the United States. A total of 2 reviewers searched 11 electronic databases to identify 53 articles meeting inclusion criteria. No studies used trauma registries or randomized control trials. Data were not pooled for further analysis because studies lacked standardized definitions for injury, rates, severity, exposure, and demographics. The following child care center injury rates were reported: (0.25-5.31 injuries per 100,000 child-hours); (11.3-18 injuries per 100 children per year); (6-49 injuries per 1000 child-years); (2.5-8.29 injuries per child-year); (2.6-3.3 injuries per child); (3.3-6.3 injuries per 100 observations); (635-835 medically attended injuries per year per 100,000 children and 271-364 child care center playground injuries per year per 100,000 children); and (3.8 injuries per child per 2000 exposure hours). Child care center injury rates were comparable to injury rates published for schools, playground, and summer camp. Most injuries were minor, while most severe injuries (fractures and concussions) were falls from playground structures. Future studies need to use standardized injury definitions and injury severity scales, focus efforts on preventing severe playground injuries in child care centers, and report child care parameters for inclusion in national injury databases.

Temporal variation in pediatric supracondylar humerus fractures requiring surgical intervention

BACKGROUND

Pediatric supracondylar humerus fractures commonly require surgical intervention and hospital admission, which is costly and consumes significant health care resources. There are few data regarding temporal characteristics (month, day and hour of injury) of this particular pediatric fracture. We wished to investigate the month, day of the week, and time of occurrence of these fractures to guide appropriate use of health care resources and prevention strategies.

METHODS

This study was a retrospective review of clinical records and radiographs of 353 children with operative supracondylar humerus fractures in a temperate climate region over 6 years. Date and time of injury and demographic data (gender, age, laterality) were extracted. Variation in month, weekday, and time of injury was analyzed using circular analysis, cosinor analysis, probability distributions and topographical distribution.

RESULTS

There was a statistically significant increase in the number of fractures during the summer with a peak in early July. When analyzing by month and day of the week, a peak was seen Thursday-Saturday during May-July and middle of the week September-October. Weekdays demonstrated a higher proportion of fractures occurring in the morning and at school. The injuries occurred in the am in 37 and the pm in 241; detailed data were known in 227 with 37 between 0000 and 1159, 51 between 1200 and 1559, and 139 between 1600 and 2359 h. The peak time of injury was 1800 h.

CONCLUSIONS

The increase in supracondylar humerus fractures in the spring through autumn in temperate regions indicates that education campaigns reinforcing fall prevention and landing surfaces should be done in the early spring. The hourly data support the need for dedicated early morning operating rooms to care for these fractures.

LEVEL OF EVIDENCE

Prevalence study, retrospective cohort, Level II .

Temporal variation in childhood injury from common recreational activities

BACKGROUND/PURPOSE

To investigate the month and day of the week of injury in common childhood activities using the National Electronic Injury Surveillance System database.

METHODS

All emergency department visits 2002–2006 from bicycles/tricycles, scooters, playground equipment, swimming/water activities, skiing/snowboarding, trampolines, and skating were analysed. The NEISS weighted and stratified data set was analysed using SUDAAN software. Weekday and month of injury, gender, race, anatomical location of the injury, geographical location of injury, and disposition were tabulated. Simple variation by month or weekday was analysed using cosinor analysis; combined variation for both month and weekday was analysed by topographical analysis.

RESULTS

There were an estimated 4.61 million emergency department visits for injuries from these activities in children in the United States. The average age was 9.5 years; there were 1.65 million girls (35.9%) and 2.97 boys (64.1%). Cosinor analysis demonstrated significant single peaks for month of injury for snow activities (January 27), trampolines (June 10), scooters (June 24), cycling (July 6), and water (July 12) activities. Double cosinor peaks were noted for skating (April 13 and September 12) and playground (April 22 and September 21) activities. Cosinor analyses demonstrated that the peak week days of injury were Monday for trampoline and snow activities, Saturday/Sunday for skating activities, Sunday for cycling, and Wednesday for playground equipment. There was no peak injury day for scooter or water activities. Topographical representation of paediatric injuries demonstrated that injuries from slides most frequently occurred April–May on Wednesdays and Saturdays, and those on swings April–May all days except Tuesday. Monkeybar injuries were bimodal, with the spring peak on Wednesday–Thursday in April/May and the fall peak Tuesday–Friday in September. Rollerblade injuries occurred Saturday–Sunday from March/April; rollerskates on Saturday–Sunday in January–April, and skateboards Saturday–Monday in August–October and Sundays in April.

CONCLUSIONS

These findings can be used to further guide childhood injury prevention programmes/campaigns and especially track improvements after targeted prevention programmes. Public parks and schools should check/correct the status of playground landing surfaces just before the bimodal peaks. Education campaigns reinforcing the need for bicycle helmets could be concentrated immediately before the increase in cycling activity – March on weekends and April/May for weekdays.

Reducing the risk of sudden infant death syndrome in child care and changing provider practices: lessons learned from a demonstration project

OBJECTIVE

The goal was to evaluate, through an American Academy of Pediatrics demonstration project, the effectiveness of a curriculum and train-the-trainer model in changing child care providers' behaviors regarding safe infant sleep practices.

METHODS

Participating licensed child care centers and family child care homes were assigned randomly to intervention and control groups. Observers performed an initial unannounced visit to each site, to watch infants being placed for sleep, to inventory sleep policies, and to administer questionnaires to center staff members. Trainers then used the American Academy of Pediatrics curriculum in educational sessions at intervention sites. Three months later, observers conducted a follow-up observation at each site, and staff members completed a questionnaire about logistic barriers encountered in implementation of safe sleep recommendations.

RESULTS

A total of 264 programs and 1212 providers completed the study; the care of 1993 infants was observed. Provider awareness of the American Academy of Pediatrics infant supine sleep position recommendation increased from 59.7% (both groups) to 64.8% (control) and 80.5% (intervention). Exclusive use of the supine position in programs increased from 65.0% to 70.4% (control) and 87.8% (intervention). Observed supine placement increased from 51.0% to 57.1% (control) and 62.1% (intervention).

CONCLUSIONS

A sudden infant death syndrome risk reduction curriculum using a train-the-trainer model is effective in improving the knowledge and practices of child care providers. Perceived parental objections, provider skepticism about the benefits of supine positioning, and lack of program policies and training opportunities are important barriers to implementation of safe sleep policies. Continued education of parents, expanded training efforts, and statewide regulations, mandates, and monitoring are critical to ongoing efforts to decrease further the risk of sudden infant death syndrome in child care.

The demographics of playground equipment injuries in children

BACKGROUND/PURPOSE

There have been many different studies of injuries owing to playground equipment but none that have looked in detail using large nationwide databases. It was the purpose of this study to investigate injuries owing to playground equipment using the National Electronic Injury Surveillance System (NEISS) database and further understand their demographics.

METHODS

Detailed NEISS injury data from 2002 through 2004 for slides, monkey bars, and swings were analyzed. Appropriate statistical analyses were performed; because of the many analyses on this large data set, P < .01 was considered statistically significant.

RESULTS

There were 22728 emergency department visits owing to playground equipment injuries recorded by NEISS between 2002 and 2004; 83.9% were owing to monkey bars, swings, and slides, and the 5 most common diagnoses were fractures (39.3%), contusions/abrasions (20.6%), lacerations (16.6%), strains/sprains (9.9%), and traumatic brain injuries (TBI) (8.5%). There were 9487 boys (54.3%) and 7995 girls (45.7%). The average age was 6.5 +/- 3.0 years. The injuries occurred at school in 38.9%; at a recreation/sporting facility, in 35.5%; and at home, in 25.6%. Most were treated and released (94.4%). Amerindian children were 2 times more likely than blacks to be admitted; compared to contusions, fractures were 9.8 times, and TBIs, 4.7 times more likely to be admitted. Injuries on monkey bars were 1.2 times more likely to be admitted than those on swings or slides. Fractures were 1.9 times more likely to occur on a monkey bar compared with swings or slides. Traumatic brain injuries were 1.4 times more likely to occur on a swing compared to slides or monkey bars.

CONCLUSION

Swings at school are the most common mechanism of injury for TBIs, and the seasonal data would suggest that increased supervision of children using swings during school hours might reduce the occurrence of TBIs. Monkey bars are the most common cause of fracture, and fracture is the most common cause of admission. Prevention strategies to reduce the number of fractures should be directed at monkey bar equipment and landing surfaces. The trend in playground equipment injury also indicates that monkey bars are problematic because the number of injuries per year per capita owing to monkey bars is stable, whereas those from swings and slides is decreasing.

Trauma prevention in children

Play and sports activities are important to the healthy development of children worldwide. Many accidents are the result of the normal desire of children for excitement and adventure. Injury prevention has been difficult to evaluate and manage because of many variables. The frequency of injuries can be reduced with parental input and adult supervision, as well as proper equipment design and installation, followed by regular inspection and maintenance. Current initiatives hold promise, especially with equipment designs and manufacture, but injuries continue to be a significant and costly health problem. By identifying where and how children are injured, recommendations can be made to increase the safety of play areas, gyms, and equipment.

The effect of safer play equipment on playground injury rates among school children

BACKGROUND

Changes to Canadian Standards Association (CSA) standards for playground equipment prompted the removal of hazardous equipment from 136 elementary schools in Toronto. We conducted a study to determine whether applying these new standards and replacing unsafe playground equipment with safe equipment reduced the number of school playground injuries.

METHODS

A total of 86 of the 136 schools with hazardous play equipment had the equipment removed and replaced with safer equipment within the study period (intervention schools). Playground injury rates before and after equipment replacement were compared in intervention schools. A database of incident reports from the Ontario School Board Insurance Exchange was used to identify injury events. There were 225 schools whose equipment did not require replacement (nonintervention schools); these schools served as a natural control group for background injury rates during the study period. Injury rates per 1000 students per month, relative risks (RRs) and 95% confidence intervals (CIs) were calculated, adjusting for clustering within schools.

RESULTS

The rate of injury in intervention schools decreased from 2.61 (95% CI 1.93-3.29) per 1000 students per month before unsafe equipment was removed to 1.68 (95% CI 1.31-2.05) after it was replaced (RR 0.70, 95% CI 0.62-0.78). This translated into 550 injuries avoided in the post-intervention period. In nonintervention schools, the rate of injury increased from 1.44 (95% CI 1.07-1.81) to 1.81 (95% CI 1.07-2.53) during the study period (RR 1.40, 95% CI 1.29-1.52).

INTERPRETATION

The CSA standards were an effective tool in identifying hazardous playground equipment. Removing and replacing unsafe equipment is an effective strategy for preventing playground injuries.

Poor neighborhoods: safe playgrounds

Although unstructured physical play is helpful to child development and physical activity is important to obesity prevention, up-to-date information about playgrounds and playground hazards in urban areas is limited. Local data are needed to identify problems and target interventions. The aim of this study was to describe the hazards in playgrounds located in low-income (median dollars 28,728-38,915) and very low-income (median dollars 18,266-18,955) Chicago neighborhoods. Using a standardized on-site survey (National Program for Playground Safety), two investigators reviewed seventy-eight public playgrounds for hazards related to playground design, safe surfaces, supervision, and equipment design and maintenance. The design of 56 playgrounds (72%) posed no hazards. One playground lacked protection from motor vehicles, and 21 had minor flaws. One playground had an asphalt surface; all others had protective surfaces, usually wood chips. The chips were too thin in many places, and in 15 playgrounds (19%), at least one concrete footing was exposed. Trash was a common surface hazard (68%). Although most equipment was safe (swings of soft materials and appropriate platform barriers), many pieces needed repairs. Equipment maintenance hazards included gaps (44%) and missing (38%) or broken parts (35%). In 13 of 39 playgrounds (33%) where children were observed playing, one or more were unsupervised. Playgrounds in very low-income neighborhoods more often had trash in the fall zone and exposed footings (P<.01 for each); there were no differences between low and very low-income neighborhoods in playground design or equipment maintenance. We conclude that playgrounds in low-income Chicago neighborhoods are of good design and have appropriate surfaces. Needed improvements include attention to wood chip depth, the removal of trash from the fall zone, and equipment repairs. Greater adult supervision is warranted.

The Stamp-in-Safety Program: A Behavioral Intervention to Reduce Behaviors that Can Lead to Unintentional Playground Injury in a Preschool Setting

OBJECTIVE

To introduce and evaluate the Stamp-in-Safety program, a behavioral intervention designed to increase the quality of supervision by teachers on preschool playgrounds and to reduce the risk of unintentional child playground injury.

METHODS

A quasi-experimental time series design was used, with observational techniques, to evaluate behavior on the playground before, during, and after the intervention as well as during a 6-month post-intervention assessment.

RESULTS

Both applied behavior analysis techniques and inferential statistics suggest that the Stamp-in-Safety program resulted in behavioral changes likely to reduce the risk of child injury on the playgrounds of childcare centers.

CONCLUSION

Results indicate promise for the Stamp-in-Safety program as a low-cost, easily implemented intervention to reduce pediatric playground injury risk at childcare centers. Suggestions for future research are offered.

Trends and patterns of playground injuries in United States children and adolescents

OBJECTIVE

To determine the prevalence, trends, and severity of injuries attributable to playground falls relative to other common unintentional mechanisms that resulted in an emergency department (ED) visit in the United States.

DESIGN AND SETTING

Data from the emergency subset of the National Hospital Ambulatory Medical Care Survey collected from 1992 to 1997 for children <20 years.

METHODS

Injury rates and 95% confidence intervals (CIs) were estimated and injury severity scores were computed.

RESULTS

There were 920551 (95% CI: 540803 to 1300299) ED visits over the 6-year study period by children and adolescents that were attributable to falls from playground equipment. The annual incidence of visits for playground injuries did not significantly decrease over the course of the study (187000 to 98000, P =.053). Injury visits for playground falls were twice as prevalent as pedestrian mechanisms, but they were less prevalent than visits for motor vehicle-- and bicycle-related injuries. A larger proportion of playground falls resulted in "moderate-to-severe" injury than did bicycle or motor vehicle injuries. Children aged 5 to 9 years had the highest number of playground falls (P =.0014). Playground falls were most likely to occur at school compared to home, public, and other locations (P =.0016).

CONCLUSIONS

Playground injury emergency visits have not significantly declined and remain a common unintentional mechanism of injury. Injury visits for playground falls were proportionally more severe than injury visits attributable to other common unintentional mechanisms. Interventions targeting schools and 5- to 9-year-old children may have the greatest impact in reducing emergency visits for playground injuries.

Injuries in child care centers: gender-environment interactions

OBJECTIVES

To examine child characteristics (age, gender) and child care center environments (socioemotional quality, physical safety) that jointly predict injuries for preschool children.

METHODS

A two year prospective study of 360 preschool children, ages 2-6 years, was conducted in four urban child care centers. Composite scores for center quality and physical safety were derived from on-site observations, and injury rates were based on teacher reports. Poisson regression analyses examined age, gender, center quality, center safety, and the interactions of gender with quality and safety as predictors of injury incidence over one child year.

RESULTS

Age was significantly associated with injury rates, with younger children sustaining higher rates. An interaction between gender and center quality also significantly predicted injury incidence: girls in low quality centers experienced more injuries, while girls in high quality centers sustained fewer injuries than their male peers. Finally, an interaction between gender and center safety showed that girls in high safety centers sustained more injuries than boys, while girls in low safety centers sustained fewer injuries.

CONCLUSIONS

Injuries occur even in relatively safe environments, suggesting that in child care settings, the socioemotional context may contribute, along with physical safety, to the incidence of injury events. Further, gender specific differences in susceptibility to environmental influences may also affect children's vulnerability and risks of injuries. The prevention of injuries among preschool children may thus require attention to and modifications of both the physical and socioemotional environments of child care.

An intervention to reduce playground equipment hazards

OBJECTIVES

A community intervention trial was carried out to evaluate the relative effectiveness of two methods of reducing playground hazards in schools. The study hypotheses were: (1) a health promotion programme addressing barriers to implementing the New Zealand Playground Safety Standard will reduce playground hazards and (2) the intervention programme will be more successful than providing information alone.

METHODS

Twenty four schools in Wellington, New Zealand were randomly allocated into two groups of 12 and their playgrounds audited for hazards. After the audit, the intervention group received a health promotion programme consisting of information about the hazards, an engineer's report, regular contact and encouragement to act on the report, and assistance in obtaining funding. The control group only received information about hazards in their playground.

RESULTS

After 19 months, there was a significant fall in hazards in the intervention schools compared with the control schools (Mann-Whitney U test, p = 0.027). No intervention schools had increased hazards and eight out of 12 had reduced them by at least three. In contrast, only two of the control schools had reduced their hazards by this amount, with three others increasing their hazards in that time.

CONCLUSIONS

It is concluded that working intensively with schools to overcome barriers to upgrading playground equipment can lead to a reduction in hazards, and that this form of intensive intervention is more effective than providing information alone.

Evaluation of interventions to prevent injuries: an overview

Overview of issues involved in evaluating the effectiveness of injury interventions is presented. An intervention should be evaluated to show it prevents injuries in the target population, to identify unintended consequences, to correct problems that limit effectiveness, to justify current and future resources from funding agencies, and to guide its replication elsewhere. Problems in conducting evaluations include obtaining sufficient resources, coping with rare events, establishing reliability and validity of measurement instruments, separating effects of multiple simultaneous events, and adjusting for the time lag between an intervention and its effects. When feasible, changes in injury rates (documented by medical records) should be used. These are more convincing for demonstrating intervention effectiveness than changes in observed or reported behaviors or in knowledge and attitudes (documented by surveys). Quasiexperimental evaluation designs are often useful, such as measuring injury rates before and after an intervention in a time series design, or intervening in one of two comparable communities in a nonequivalent control group design. Evaluations using true experimental designs, in which individuals or groups are randomized to receive or not receive an intervention, are highly desirable but are often difficult due to logistical or ethical considerations. An evaluation component should be integral to the introduction of any new injury intervention.

Are community health interventions evaluated appropriately? A review of six journals

OBJECTIVES

To determine if Randomized Controlled Trial (RCT) methodology was used appropriately in community health, we: (1) determined the proportion of non-randomized studies that should have been RCTs, and (2) assessed the quality of the RCTs.

METHODS

The 1992 issues of six community health journals were manually searched. Intervention studies were analyzed. Studies that did not use randomization were analyzed for feasibility and practicality of RCT methods; RCTs were analyzed for quality using a checklist. RCTs were compared with community health RCTs from The New England Journal of Medicine. The proportion of studies meeting each criterion was determined.

RESULTS

Fourteen percent of 603 studies were interventions and 4% were RCTs. Of those not using randomization, 42% should have. Mean RCT scores were significantly lower for the community health journals than for The New England Journal of Medicine. Many criteria important to quality scored poorly.

CONCLUSIONS

RCTs are underused and lack methodologic rigor in community health. Conclusions regarding the effectiveness of interventions are therefore suspect.

A nursing intervention to ensure a safe playground environment

Unintentional injuries sustained on school playgrounds are a continual problem not only for children but also for the school nurses who are concerned with their safety. A group of school nurses organized by the local health department's pediatric nurse practitioner responded proactively to this problem by enlisting both school officials and students to accept joint responsibility for a safe play environment. The school nurses assisted the staff in providing a safe play environment and encouraged the students to behave in a safe and acceptable manner on the playground. The nurses developed (a) a Playground Safety Assessment Guide for the school staff to establish and maintain a safe play environment, (b) an in-service session for playground monitors to learn how to supervise children at recess, and (c) a student-oriented program for the children to improve behavior on the playground based on a program conceived by Utah State University (Daug & Fukui, 1988). School nurses and pediatric nurse practitioners can use this program as a model for other schools to improve the physical play environment and behavior of the children at recess.

Public health surveillance in child-care settings

To investigate the potential contribution of public health surveillance systems to the health of children and workers in out-of-home child-care settings, we review existing public health surveillance practice in the United States. We identify issues that are of particular concern for surveillance in child-care settings. We propose a framework for developing public health surveillance systems that uses sentinel child-care sites, notifiable disease surveillance, modification of existing surveillance systems, and population surveys. Successful surveillance in these settings depends on the active participation of child-care providers, public health practitioners, and clinicians in (a) the selection of high priority diseases and injuries for surveillance; (b) the development of practical case definitions; (c) the augmentation of current surveillance systems to include disease and injury related to child care; and (d) the implementation, assessment, dissemination, and evaluation of new approaches for surveillance in child-care settings.