Assessing the Prevalence of Doping Among Elite Athletes: An Analysis of Results Generated by the Single Sample Count Method Versus the Unrelated Question Method.

In 2011, a group of researchers investigated the 12-month prevalence of doping at the 13th International Association of Athletics Federations World Championships in Athletics (WCA) in Daegu, South Korea, and also at the 12th Pan-Arab Games (PAG) in Doha, Qatar. The prevalence of doping at each event was estimated using an established randomized response method, the Unrelated Question Model (UQM). The study, published in 2018, found that the prevalence of past-year doping was at least 30% at WCA and 45% at PAG. At both events, separate data sets were collected in addition to the UQM data using a new method, the single sample count (SSC). Recently, Petróczi et al. have reported 12-month doping prevalence estimates for these two events based on the SSC data. These investigators obtained substantially lower prevalence estimates using the SSC and suggested that the 2018 estimates based on the UQM may have been too high. However, in this communication, we point out several possible shortcomings in the methods of Petróczi et al. and show that their SSC data would be equally compatible with a high 12-month doping prevalence comparable to the UQM estimates published in 2018.

Are Different Aged Youth Skiers and Snowboarders Experiencing Different Injury Characteristics?

INTRODUCTION: Skiing and snowboarding are popular winter sports with significant youth participation and inherent potential for injury. We investigated the relationship between age and injury characteristics exhibited by youth skiers and snowboarders. METHODS: In this cross-sectional study, we investigated injury characteristics among youth skiers and snowboarders at a ski resort, examining the association between age and injury type. We compared injury characteristics among young children (aged 3-6 y), school-aged children (aged 7-14 y), and older adolescents (aged 15-17 y) using χ2, and examined predictive variables for injuries at different anatomical locations using logistic regression. RESULTS: Compared with snowboarding, skiing was associated with greater odds of lower extremity (adjusted odds ratio [aOR]=6.8, 95% confidence interval [CI]: 4.89, 9.47, P<0.001) and head/face/neck (aOR=1.63, 95% CI: 1.20, 2.21, P=0.002) injuries. Compared with skiing, snowboarding was associated with greater odds of upper extremity injury (aOR=5.9, 95% CI: 4.6, 7.6, P<0.001). Age group significantly affected injury mechanism (χ2 [df=12, n=1129]=42.882, P<0.0001) and diagnosis (χ2 [df=12, n=1129]=43.093, P<0.0001). Young child skiers had the highest proportion of injuries to the head/neck/face and lower extremities and a significantly higher proportion of collision injuries and fractures than older skiers. Young child skiers most frequently injured the lower leg/ankle, while older skiers most frequently injured the knee. CONCLUSIONS: Youth skiers exhibited predominately lower extremity injuries, while snowboarders exhibited predominately upper extremity injuries. Age significantly affected injury mechanism and injury diagnosis in youth skiers. Specifically, younger skiers tended to suffer more fractures and collision injuries than older youth skiers.

Fair Play as an Injury Prevention Intervention: Do Yellow Card Accumulation Policies Reduce High School Soccer Injuries?

OBJECTIVES: Evaluate yellow card policies' (YCPs) effectiveness in reducing competition contact injuries (CCIs). DESIGN: Retrospective cohort. SETTING: High schools. PARTICIPANTS: Soccer players from High School (HS) Reporting Information Online participating schools, 2005/06 to 2017/18. INDEPENDENT VARIABLES: Athlete exposure (AE), CCIs from HS competitions collected from states with/without YCPs. MAIN OUTCOME MEASURES: Rate and rate ratio (RR) of athlete-athlete CCIs recorded by athletic trainers were compared between states with/without YCPs and pre-YCPs/post-YCPs among the states with YCPs using Poisson regressions. Proportions of severe athlete-athlete CCIs were also described in states with/without YCPs. RESULTS: Fifteen states implemented YCPs between 2005/06 and 2017/18; 901 athlete-athlete CCIs occurred during 352 775 competition AEs in states with YCPs, and 3525 injuries during 1 459 708 competition AEs in states without YCPs. There was no significant difference in injury rates between schools in states with/without YCPs (RR 1.07; 95% confidence interval [CI]: 0.97-1.17). Among state with YCPs, injury rates were not significantly different between pre-YCP and post-YCP implementation (RR 1.15; 95% CI: 0.98-1.34). Although a significantly lower proportion of injuries resulting in >3 weeks' time loss (TL) occurred in states with YCPs (injury proportion ratio 0.81; 95% CI: 0.66-0.997), no significant differences were observed in proportions of other severe athlete-athlete CCIs between states with/without YCPs. CONCLUSIONS: Yellow card policies were ineffective in lowering HS soccer athlete-athlete CCI rates, although injuries resulting in >3 weeks' TL were less prevalent in states with YCPs. Implementation of YCPs alone, without proper enforcement, may not be a sufficient injury prevention strategy.

Facilitators and barriers for parental consent to pediatric emergency research.

BACKGROUND: Obtaining informed consent for clinical research in the pediatric emergency department (ED) is challenging. Our objective was to understand the factors that influence parental consent for ED studies. METHODS: This was a cross-sectional survey assessing parents' willingness to enroll their children into an ED research study. Parents reporting a willingness to enroll in ED studies were presented with two hypothetical scenarios, a low-risk and a high-risk study, and then asked about decision influencers affecting consent. Parents expressing a lack of willingness to enroll were asked which decision influencers impacted their consent decision. RESULTS: Among 118 parents, 90 (76%) stated they would be willing to enroll their child into an ED study; of these, 86 (96%) would consent for a low-risk study and 54 (60%) would consent for a high-risk study. Caucasian parents, and those with previous research exposure, were more likely to report willingness to participate. Those who would consent to the high-risk study cited "benefits that research would provide to future children" most strongly influenced their decision to agree. CONCLUSIONS: ED investigators should highlight the benefits for future children and inquire about parents' previous exposure to research to enhance ED research enrollment. Barriers to consent in non-Caucasian families should be further investigated. IMPACT: Obtaining consent for pediatric emergency research is challenging and this study identified factors influencing parental consent for research in EDs. Benefits for future children and parents' previous research experience were two of the most influential factors in parents' willingness to consent to ED research studies. These findings will help to improve enrollment in ED research studies and better our understanding of how to promote the health and well-being of pediatric patients.

Single season re-injury risk after concussion and lower extremity injury among male, collision sport, high school athletes.

OBJECTIVES: Research suggests that a recent concussion increases subsequent lower extremity injury risk; however, data in high school athletes is limited. This study evaluates the association between concussion and subsequent injury risk among male, collision sport, high school athletes over a single season. DESIGN: Retrospective cohort study. METHODS: Data were obtained from 2005/06-2014/15 in the High School Reporting Information Online database. A two stage, multi-method matching process was used to identify athletes who suffered multiple injuries over a single athletic season. Demographics and injury characteristics were compared with Chi square and Student's t-tests. Multiple Cox Proportional Hazards regression analysis was used to test whether index injury type was associated with hazard of subsequent injury following return to play from index injury. RESULTS: Overall 1364 HS athletes sustained 2 injuries over a single athletic season (subsequent injury within 45 days of the index injury). Index injuries included 686 (50.2%) lower extremity injuries, 417 (30.6%) upper extremity injuries, and 261 (19.1%) concussions. Hazard of subsequent concussion was increased in the index concussion group relative to the index lower extremity injury group [hazard ratio (HR): 1.60, 95% CI: 1.15-2.23, p = 0.0052]. Hazard of a subsequent lower extremity injury was not significantly different for the index lower extremity injury group relative to the index concussion group [HR: 1.27, 95% CI: 0.98-1.65, p = 0.0728]. CONCLUSIONS: History of recent concussion or recent lower extremity injury are both risk factors for subsequent lower extremity injury in male, collision sport, high school athletes.

Sex-Based Differences in Anterior Cruciate Ligament Injuries Among United States High School Soccer Players: An Epidemiological Study.

BACKGROUND: Anterior cruciate ligament (ACL) tears are common among high school athletes, with sex-based differences accounting for higher injury rates in girls. Previous epidemiological studies on ACL injuries focusing on adolescent athletes have looked at injuries across multiple sports, but few have analyzed ACL tears in solely high school soccer athletes. PURPOSE: To examine sex-based differences in the epidemiology of ACL injuries among high school soccer players in the United States (US). STUDY DESIGN: Descriptive epidemiological study. METHODS: ACL injury data for US high school soccer players were obtained from the internet-based National High School Sports-Related Injury Surveillance Study's High School RIO (Reporting Information Online) system. Athletic trainers from a random sample of 100 high schools from 8 strata based on US Census geographic region reported data for athlete-exposures (AEs) (practice or competition) and ACL injuries from 2007 through 2017. Injury rates were calculated as the number of ACL injuries per 100,000 AEs. Subgroup differences were evaluated with rate ratios (RRs) or injury proportion ratios (IPRs) and 95% CIs. Statistical differences in demographics between groups were examined using independent t tests. Comparisons of categorical data (ie, level of play) were performed using the Wald chi-square test. RESULTS: The reported number of ACL injuries corresponded to weighted national estimates of 41,025 (95% CI, 33,321-48,730) ACL injuries in boys' soccer and 110,028 (95% CI, 95,349-124,709) in girls' soccer during the study period. The rate of injuries was higher in girls' soccer (13.23/100,000 AEs) than boys' soccer (4.35/100,000 AEs) (RR, 3.04 [95% CI, 2.35-3.98]). The rate of ACL injuries was higher in competition compared with practice for girls (RR, 14.77 [95% CI, 9.85-22.15]) and boys (RR, 8.69 [95% CI, 5.01-15.08]). Overall, a smaller proportion of ACL injuries were caused by player-player contact for girls (30.1%) compared with boys (48.6%) (IPR, 0.62 [95% CI, 0.41-0.93]). CONCLUSION: ACL injury rates and patterns in high school soccer players differed between sex, type of exposure (practice vs competition), and mechanism of injury.

Are high school girls' lacrosse players at increased risk of concussion because they are not allowed to wear the same helmet boys' lacrosse players are required to wear?

BACKGROUND: Boys' lacrosse (LAX), a full contact sport allowing body and stick checking, mandates hard shell helmets with full face masks. Girls' LAX, which prohibits body checking and whose sphere rule is supposed to prevent stick checking to the head, allows optional flexible headgear with/without integrated eye protection. Whether the required boys' LAX helmets should also be mandated in girls' LAX has been debated. METHODS: In this retrospective cohort study we used LAX concussion data from a national high school sports-related injury surveillance study to determine if girls' LAX players were at increased risk of concussion from stick or ball contact due to differences in helmet regulations by calculating the attributable risk and attributable risk percent (AR%) for concussion resulting from ball or stick impacts. RESULTS: From 2008-09 through 2018-19, boys' LAX players sustained 614 concussions during 1,318,278 athletic exposures (AEs) (4.66 per 10,000 AEs) and girls' LAX players sustained 384 concussions during 983,291 AEs (3.91 per 10,000 AEs). For boys, athlete-athlete contact was the most common mechanism of concussion accounting for 66.4% of all concussions, while stick or ball contact accounted for 23.5%. For girls, stick or ball contact accounted for 72.7% of all concussions, while athlete-athlete contact accounted for 19.8%. Concussion rates from stick or ball contact were significantly higher in girls vs. boys (RR = 2.60, 95% CI 2.12-3.18). The attributable risk associated with playing girls' vs. boys' LAX for concussion resulting from stick or ball contact was 1.75 concussions per 10,000 AEs (95% CI 1.37-2.12) and the AR% was 61.5% (95% CI 52.9-68.5). An estimated 44.7% of all girls' LAX concussions could have been prevented if girls' LAX players wore the helmet mandated in boys' LAX. CONCLUSIONS: Girls' LAX players who are allowed, but not required, to wear a flexible headgear are at increased risk of concussions from stick or ball impacts compared to boys' LAX players, who are required to wear a hard shell helmet with full face mask. Additional research is needed to determine if there are any defendable arguments to continue justifying restricting girls' LAX players access to this effective piece of protective equipment.

A comparison of recreational skiing- and snowboarding-related injuries at a Colorado ski resort, 2012/13-2016/17.

The purpose of this study was to compare injury patterns between recreational skiers and snowboarders. Injured skiers (n = 3,961) and snowboarders (n = 2,428) presented to a mountainside medical clinic, 2012/13-2016/17. Variables investigated for analysis included demographics/characteristics, injury event information, and injury information. Skiers were older than snowboarders (34.3 ± 19.3 vs. 23.2 ± 10.5 years, p < 0.001); a greater proportion of skiers were female (46.3% vs. 27.8%, p < 0.001). Most skiers (84.4%) and snowboarders (84.5%) were helmeted at the time of injury (p = 0.93). Snowboarders were most frequently beginners (38.9%), skiers were intermediates (37.8%). Falls to snow (skiers = 72.3%, snowboarders = 84.8%) and collisions with natural objects (skiers = 9.7%, snowboarders = 7.4%) were common injury mechanisms. Common skiing injuries were knee sprains (20.5%) and head trauma (8.9%); common snowboarding injuries were wrist fractures (25.7%), shoulder separations (9.1%), and head trauma (9.0%). Given that injury patterns significantly differ between sports, it is important for clinicians, ski patrollers, and resorts to develop and deliver sport-specific injury prevention interventions to most effectively decrease injury burden.

Evaluating the effectiveness of traumatic brain injury state laws among high school athletes.

BACKGROUND: Traumatic brain injury legislation varies across states. A comprehensive nationwide evaluation of state traumatic brain injury laws is vital given growing populations of high school athletes. This study evaluates the effectiveness of traumatic brain injury laws by examining longitudinal trends in incident and recurrent concussion rates and determines if state level variations in legislation's language affected the observed trends. METHODS: In this retrospective ecological study of a large national sample of US high schools from 2005/06 through 2017/18, piecewise regression models along with a profile likelihood approach were utilized to examine longitudinal trends in incident and recurrent concussion rates. RESULTS: Overall incident concussion rates increased by an additional 1.85%/standardized month (STDM) (95% confidence interval (CI): 1.14, 2.56%) prior to law passage and decreased by an additional 1.08%/ STDM (95%CI: - 1.43, - 0.72%) after law passage. Similar trends were observed for overall recurrent concussion rates. Among states that specified the category of healthcare provider for return to play clearance, post-law recurrent concussion rates decreased on average by an additional 1.59%/STDM (95%CI: - 3.42, 0.22%) compared to states that did not specify the category of healthcare provider. CONCLUSIONS: The passage of state level traumatic brain injury laws was associated with an increase in overall incident and recurrent concussion rates prior to law passage and a decrease in rates after law passage. Although not statistically significant, states with traumatic brain injury laws specifying the category of healthcare provider for return to play clearance had a greater rate of decline in post-law recurrent concussion rates compared to states not specifying the category of healthcare provider. The findings suggest that state traumatic brain injury laws may benefit from specifying the category of healthcare provider allowed to provide return to play clearance, if they do not already include such language.

Epidemiology of Injuries Sustained in Boys' High School Contact and Collision Sports, 2008-2009 Through 2012-2013.

BACKGROUND: Injury epidemiology for boys' high school contact and collision sport has been described in several overlapping but fragmented studies. Comprehensive comparisons of injuries sustained in boys' soccer, wrestling, football, ice hockey, and lacrosse are lacking. PURPOSE: To describe patterns of injury by severity, body site, and diagnosis among high school boys' contact and collision sports in the United States. STUDY DESIGN: Descriptive epidemiology study. METHODS: Injury rates and rate ratios (RRs) were calculated for injuries sustained in boys' high school soccer, wrestling, football, ice hockey, and lacrosse through use of the High School RIO (Reporting Information Online) surveillance data from 2008-2009 through 2012-2013. Injury patterns were described by site, diagnosis, time loss, and severity. Severe injury was defined as an injury that resulted in 21 days or more of time loss from sport participation. Risk of sustaining a concussion was compared between sports. RESULTS: The risk of sustaining an injury was higher in competition compared with practice overall (RR, 4.01; 95% CI, 3.90-4.12); the same pattern was true for severe injuries (RR, 4.61; 95% CI, 4.34-4.90). Football players experienced the highest injury rate (3.87 per 1000 athlete-exposures [AEs]) and the highest severe injury rate (0.80 per 1000 AEs). Overall, the most commonly injured body site was the head/face (22.5%), and the most prevalent injury diagnosis was ligament sprain not requiring surgery (23.5%). The most frequently injured body site from severe injury was the knee (24.6%), and fracture or avulsion was the most prevalent severe injury diagnosis (37.0%). Football players had a significantly higher risk of sustaining a concussion compared with other contact or collision sport athletes (P < .05). CONCLUSION: Injuries rates were higher in competition than those in practice for boys' high school contact and collision athletes. Football players sustained the highest injury rate, the highest severe injury rate, and the highest concussion rate among the sports included in this analysis. Understanding these patterns of injury can generate policy and rule changes to make sports safer and maintain high levels of participation.

The Eternally Wounded Athlete: How Medical Professionals and Sports Injury Researchers Have Limited Female Athletes' Sport Participation and Biased the Interpretation of Sports Injury Research.

Purpose of Review: Female sports participation has long been diminished compared to male sports participation. This review contextualizes current findings in historical implicit gender bias. Recent Findings: The transition from the recognition of the Female Athlete Triad Syndrome to the Relative Energy Deficiency in Sport Syndrome (RED-S Syndrome) to the newly proposed Male Athlete Triad Syndrome demonstrates the power of implicit gender bias on sports injury research efforts, clinical practices, and policy decisions. Similarly, anterior cruciate ligament (ACL) injuries have long been portrayed as a young female athlete injury, a perception which has affected the sports medicine world in a way that has resulted in both male and female athletes not fully benefitting from possible research and clinical advances. Summary: This review explores the history of female exclusion from sport and considers how modern sport and exercise medicine has, perhaps because of implicit gender biases, inadvertently contributed to that exclusion.

Effect of environmental conditions on injury rates at a Colorado ski resort.

OBJECTIVE: To determine the effect of daily environmental conditions on skiing and snowboarding-related injury rates. METHODS: Injury information was collected from a mountainside clinic at a large Colorado ski resort for the 2012/2013 through 2016/2017 seasons. Daily environmental conditions including snowfall, snow base depth, temperature, open terrain and participant visits were obtained from historical resort records. Snowpack and visibility information were obtained for the 2013/2014 through 2014/2015 seasons and included in a subanalysis. Negative binomial regression was used to estimate injury rate ratios (IRRs) and 95% CIs. RESULTS: The overall injury rate among skiers and snowboarders was 1.37 per 1000 participant visits during 2012/2013 through 2016/2017. After adjustment for other environmental covariates, injury rates were 22% higher (IRR=1.22, 95% CI 1.14 to 1.29) on days with <2.5 compared with ≥2.5 cm of snowfall, and 14% higher on days with average temperature in the highest quartile (≥-3.1°C) compared with the lowest (<-10.6°C; IRR=1.14, 95% CI 1.03 to 1.26). Rates decreased by 8% for every 25 cm increase in snow base depth (IRR=0.92, 95% CI 0.88 to 0.95). In a subanalysis of the 2013/2014 and 2014/2015 seasons including the same covariates plus snowpack and visibility, only snowpack remained significantly associated with injury rates. Rates were 71% higher on hardpack compared with powder days (IRR=1.71, 95% CI 1.18 to 2.49) and 36% higher on packed powder compared with powder days (IRR 1.36, 95% CI 1.12 to 1.64). CONCLUSIONS: Environmental conditions, particularly snowfall and snowpack, have a significant impact on injury rates. Injury prevention efforts should consider environmental factors to decrease injury rates in skiers and snowboarders.

Relationship of Overuse Injuries and Extrascholastic Sport Participation in High School Athletes 2009-2010 through 2015-2016.

INTRODUCTION: Overuse injuries (injuries due to repetitive loads with inadequate rest) can negatively affect high school athletes, but limited data exist on the effect of sports participation outside of the school-sanctioned season on the development of overuse injuries. OBJECTIVE: Compare overuse injury patterns among high school athletes who participate in extrascholastic athletics to those participating only in scholastic sports. DESIGN: Descriptive cross-sectional, secondary analysis of injury data collected on high school athletes across 22 sports over the 2009-2010 through 2015-2016 academic years. SETTING: Deidentified data collected as part of the High School Reporting Information Online study (HS RIO). PARTICIPANTS: High school athletes from a large convenience sample of U.S. high schools. MAIN OUTCOME MEASUREMENTS: Injury proportion ratios (IPRs) were computed overall and for individual sports to compare the proportion of overuse injuries in athletes competing in extrascholastic sports to athletes participating only in scholastic athletics. RESULTS: Overall, extrascholastic athletes experienced a higher proportion of overuse injuries compared to scholastic-only athletes (IPR = 1.21, 95% confidence interval [CI] 1.13-1.30), but this association varied by sport. Among extrascholastic athletes, a higher proportion of overuse injuries occurred in those simultaneously playing the same sport outside the school setting (IPR = 1.32, 95% CI 1.11-1.57) as well as having experienced an injury within the past year (IPR = 1.63, 95% CI 1.36-1.95) compared to those sustaining non-overuse injuries. CONCLUSIONS: Overuse injuries were associated with extrascholastic athletics and occurred in higher proportion in extrascholastic athletes who were playing the same sport in more than one league.

Rates and Patterns of Lower Extremity Sports Injuries in All Gender-Comparable US High School Sports.

BACKGROUND: High school athletes with lower extremity sports injuries (LESIs) frequently present to the emergency department in the United States. Previous epidemiological studies have presented rates and mechanisms of LESIs in these athletes. No studies, however, have looked at LESIs in gender-comparable sports in an attempt to evaluate what differences exist between LESIs in boys and girls. PURPOSE: To describe the epidemiology of LESIs among US high school athletes using a large national database of athletes in sports that could be considered gender comparable, given the rules of play and protective equipment. STUDY DESIGN: Descriptive epidemiology study. METHODS: Descriptive data from 2005 to 2016 were collected using the internet-based High School Reporting Information Online (High School RIO), a national high school sports injury surveillance system, for athletes participating in 8 gender-comparable sports (soccer, volleyball, basketball, baseball/softball, swimming and diving, track and field, cross-country, and tennis). Rates and patterns of injury were evaluated, with injury rates calculated as ratio of injuries per 10,000 athlete-exposures. Rate ratios (RRs) were calculated to compare the LESI rates in girls and boys. RESULTS: In both genders, LESI rates (per 10,000 athlete-exposures) were highest in soccer (girls, 15.87; boys, 11.68) followed by basketball (girls, 11.51; boys, 9.35), and were lowest in swimming and diving (girls, 0.70; boys, 0.39). Although injury rates were significantly higher in girls compared with boys in all sports, only in tennis was the RR greater than 2 (RR, 2.03; 95% CI, 1.17-3.54). Girls had a greater proportion of severe LESIs and injuries that received radiographic evaluation, such as magnetic resonance imaging, compared with boys for all sports except volleyball. Consistency in the mechanism of injury was demonstrated between genders within each sport. CONCLUSION: This study demonstrated that LESIs are common among high school athletes and disproportionately affect girls more than boys, especially when looking at severe injuries and resource utilization. Further studies are needed to elucidate the cause of these findings. We hope that the awareness of gender-based differences in LESIs will lead to improvements in targeted efforts to decrease injury rates and injury severity.

Epidemiology of Shoulder and Elbow Injuries Among US High School Softball Players, 2005-2006 Through 2016-2017.

BACKGROUND: Injury prevalence has been well described among baseball athletes; similarly, a better understanding of injuries in softball athletes is needed. PURPOSE: To examine shoulder and elbow injury epidemiology among high school softball athletes in the United States. STUDY DESIGN: Descriptive epidemiological study. METHODS: Injury data were obtained from the National High School Sports-Related Injury Surveillance System, which captures data from a large national sample of US high schools. Annually, a random sample of 100 high schools provided a representative sample with respect to the 4 US Census geographic regions and 2 school sizes (cutoff point, 1000 students). Athletic trainers from participating schools reported data for athlete-exposures (AEs; practice or competition) and shoulder and elbow injuries from 2005-2006 through 2016-2017. RESULTS: A total of 239 shoulder injuries and 85 elbow injuries occurred within 2,095,329 AEs. The overall shoulder injury rate was 1.14 per 10,000 AEs, whereas the overall elbow injury rate was 0.41 per 10,000 AEs. Injuries to the shoulder were more likely to occur during competition as compared with practice (rate ratio, 1.28; 95% CI, 0.99-1.65). Half of the shoulder (50.4%) and elbow 48.9% injuries were due to an overuse/chronic mechanism. Of the athletes sustaining an injury, 86.8% with shoulder injuries and 93.0% with elbow injuries returned to play within 21 days. Only 16.7% of shoulder injuries and 17.5% of elbow injuries were sustained by pitchers. CONCLUSION: Shoulder and elbow injury rates, time to return, and percentage of injuries among pitchers were far lower in high school softball than previously reported values for high school baseball. There were relatively low incidences of shoulder and elbow injuries in high school softball as compared with baseball, with few injuries requiring lengthy time to return to play.

Epidemiology of Clavicle Fractures Among US High School Athletes, 2008-2009 Through 2016-2017.

BACKGROUND: Little is known about the epidemiology of clavicle fractures in United States (US) high school athletes. Sports participation among high school students has increased steadily, placing increased numbers at risk of sports-related injury. PURPOSE: To describe the epidemiology of clavicle fractures among high school athletes, including injury rates by sex, sport, and type of play and trends in operative versus nonoperative treatment. STUDY DESIGN: Descriptive epidemiology study. METHODS: The study data set included all athlete-exposure (AE) and clavicle fracture data collected from 2008-2009 through 2016-2017 from a large sample of US high schools as part of the National High School Sports-Related Injury Surveillance Study for students participating in boys' football, boys'/girls' soccer, boys'/girls' basketball, boys'/girls' volleyball, boys' wrestling, boys' baseball, girls' softball, girls' field hockey, boys' ice hockey, boys'/girls' lacrosse, boys'/girls' swimming and diving, boys'/girls' track and field, girls' gymnastics, girls' cheerleading, boys'/girls' tennis, and boys'/girls' cross-country. RESULTS: Overall, 567 clavicle fractures were reported during 31,520,765 AEs, an injury rate of 1.80 per 100,000 AEs. Injury rates varied by sport, with the highest rates in the boys' full-contact sports of ice hockey (5.27), lacrosse (5.26), football (4.98), and wrestling (2.21). Among girls' sports, the highest rates were in soccer (0.92), lacrosse (0.26), and basketball (0.25). In sex-comparable sports, injury rates were still significantly higher among boys (1.03) than girls (0.35) (rate ratio, 2.91; 95% CI, 1.97-4.30). Injury rates were significantly higher in competition (4.58) as compared with practice (0.87) (rate ratio, 5.27; 95% CI, 4.44-6.26). Most injuries were treated conservatively (82.7%) rather than operatively (17.3%). Time to return to sports varied, with a greater proportion of medical disqualifications among those treated operatively (40.0%) as compared with those treated conservatively (22.6%) (injury proportion ratio, 1.77; 95% CI, 1.31-2.39). CONCLUSION: Although clavicle fracture rates are relatively low, they vary by sport, sex, and activity. Understanding such differences should drive more effective, targeted injury prevention efforts. Increased time loss from sports with surgical versus conservative treatment may have been influenced by factors including injury severity and its timing relative to the season's progress.

The First Decade of Web-Based Sports Injury Surveillance: Descriptive Epidemiology of Injuries in US High School Girls' Softball (2005-2006 Through 2013-2014) and National Collegiate Athletic Association Women's Softball (2004-2005 Through 2013-2014).

CONTEXT: The advent of Web-based sports injury surveillance via programs such as the High School Reporting Information Online system and the National Collegiate Athletic Association Injury Surveillance Program has aided the acquisition of girls' and women's softball injury data. OBJECTIVE: To describe the epidemiology of injuries sustained in high school girls' softball in the 2005-2006 through 2013-2014 academic years and collegiate women's softball in the 2004-2005 through 2013-2014 academic years using Web-based sports injury surveillance. DESIGN: Descriptive epidemiology study. SETTING: Online injury surveillance from softball teams in high school girls (annual average = 100) and collegiate women (annual average = 41). PATIENTS OR OTHER PARTICIPANTS: Girls' or women's softball players who participated in practices and competitions during the 2005-2006 through 2013-2014 academic years in high school and the 2004-2005 through 2013-2014 academic years in college. MAIN OUTCOME MEASURE(S): Athletic trainers collected time-loss injury and exposure data. Injury rates per 1000 athlete-exposures (AEs) were calculated. Injury rate ratios (IRRs) with 95% confidence intervals (CIs) compared injury rates by competition level, school size or division, event type, and time in season. RESULTS: The High School Reporting Information Online system documented 1357 time-loss injuries during 1 173 722 AEs; the National Collegiate Athletic Association Injury Surveillance Program documented 1848 time-loss injuries during 579 553 AEs. The injury rate was higher in college than in high school (3.19 versus 1.16/1000 AEs; IRR = 2.76; 95% CI = 2.57, 2.96). The competition injury rate was higher than the practice injury rate in high school (IRR = 2.02; 95% CI = 1.82, 2.25) and in college (IRR = 1.39; 95% CI = 1.27, 1.52). Softball players at both levels sustained a variety of injuries, with the most common being ankle sprains and concussions. Many injuries also occurred while fielding or running bases. CONCLUSIONS: Injury rates were greater in collegiate versus high school softball and in competitions versus practices. These findings highlight the need for injury-prevention interventions, including strength-training and prevention programs to reduce ankle sprains and provide protection for batters from pitches and fielders from batted balls.

The First Decade of Web-Based Sports Injury Surveillance: Descriptive Epidemiology of Injuries in US High School Boys' Baseball (2005-2006 Through 2013-2014) and National Collegiate Athletic Association Men's Baseball (2004-2005 Through 2013-2014).

CONTEXT: The advent of Web-based sports injury surveillance via programs such as the High School Reporting Information Online system and the National Collegiate Athletic Association Injury Surveillance Program has aided the acquisition of boys' and men's baseball injury data. OBJECTIVE: To describe the epidemiology of injuries sustained in high school boys' baseball in the 2005-2006 through 2013-2014 academic years and collegiate men's baseball in the 2004-2005 through 2013-2014 academic years using Web-based sports injury surveillance. DESIGN: Descriptive epidemiology study. SETTING: Online injury surveillance from baseball teams in high school boys (annual average = 100) and collegiate men (annual average = 34). PATIENTS OR OTHER PARTICIPANTS: Boys' or men's baseball players who participated in practices and competitions during the 2005-2006 through 2013-2014 academic years in high school or the 2004-2005 through 2013-2014 academic years in college, respectively. MAIN OUTCOME MEASURE(S): Athletic trainers collected time-loss injury and exposure data. Injury rates per 1000 athlete-exposures (AEs) were calculated. Injury rate ratios (IRRs) with 95% confidence intervals (CIs) compared injury rates by school size or division, time in season, event type, and competition level. RESULTS: The High School Reporting Information Online system documented 1537 time-loss injuries during 1 573 257 AEs; the National Collegiate Athletic Association Injury Surveillance Program documented 2574 time-loss injuries during 804 737 AEs. The injury rate was higher in college than in high school (3.20 versus 0.98/1000 AEs; IRR = 3.27; 95% CI = 3.07, 3.49). The competition injury rate was higher than the practice injury rate in high school (IRR = 2.27; 95% CI = 2.05, 2.51) and college (IRR = 2.32; 95% CI = 2.15, 2.51). Baseball players at the high school and collegiate levels sustained a variety of injuries across the body, with the most common injuries reported to the upper extremity. Many injuries also occurred while fielding or pitching. CONCLUSIONS: Injury rates were greater in collegiate versus high school baseball and in competition versus practice. These findings highlight the need for injury-prevention interventions focused on reducing the incidence of upper extremity injuries and protecting batters from pitches and fielders from batted balls.

Postconcussion Academic Support in Children Who Attend a Primary Care Provider Follow-up Visit after Presenting to the Emergency Department.

OBJECTIVE: To examine whether a primary care provider (PCP) follow-up visit after emergency department evaluation of concussion improved the children's likelihood of receiving academic support. STUDY DESIGN: This was a prospective cohort study. Concussed children, aged 8-18 years, presenting to a regional pediatric trauma center emergency department (n = 160) were contacted 7 and 30 days after injury to gather data on PCP follow-up, symptoms, quality of life, and receipt of academic support instituted after and because of the concussion. Bivariate comparisons of demographics, concussion characteristics, quality of life, and symptoms were made between children who did and did not receive support using independent samples t tests, Wilcoxon rank sum tests, or χ2 tests. ORs and 95% CIs were calculated using multivariable logistic regression with backwards elimination to test the association between attending an outpatient follow-up visit and the receipt of academic support for variables where P < .2 in bivariate comparisons. RESULTS: Overall, 51.3% (n = 82) received academic support; of these, 84.2% attended a follow-up visit compared with 71.8% of 78 children who attended a follow-up visit but did not receive support (P = .06). Children who received support were more likely to have commercial insurance; experience a sports-related injury mechanism; have parents whose primary language was English; suffer from learning disabilities and migraines; and be non-Hispanic (P < .05). There was no association between attending a follow-up visit and receipt of academic support (adjusted OR 1.83; 95% CI 0.75-4.45). CONCLUSIONS: Although the majority of children received academic support postconcussion, accommodations were associated with several demographic, medical history, and injury characteristics, but not attending a PCP follow-up visit.