Sledding-Related Injuries Among Children and Adults Treated in US Emergency Departments From 2008 to 2017.

OBJECTIVE: To describe the epidemiology of sledding-related injuries among children and adults treated in US emergency departments (EDs). DESIGN: The researchers performed a retrospective analysis using data from the National Electronic Injury Surveillance System (NEISS). SETTING: The NEISS collects data on consumer products-related and sports-related injuries treated in US EDs from approximately 100 hospitals that represent a probability sample of >5000 hospitals. PATIENTS: Children (≤19 years of age) and adults who were treated for sledding-related injuries in EDs from 2008 to 2017. INDEPENDENT VARIABLES: The researchers analyzed characteristics that included sex, body part injured, injury diagnosis, disposition from the ED, injury locale, injury mechanism, and sled type. MAIN OUTCOME MEASURES: All cases of sledding-related injuries were identified using NEISS product codes for sleds (1217), toboggans (1273), snow disks (1274), and snow tubes (1299). RESULTS: An estimated 220 488 patients [95% confidence interval (CI): 169 839-271 137] were treated in EDs for sledding-related injuries. Overall, the injury rate decreased significantly for both children and adults. Children accounted for 69.7% of the injury cases. Fractures were the most common injury diagnosis for children (23.9%) and adults (27.4%). Compared to adults, children were more likely to sustain a head injury [relative risk (RR): 1.91 (95% CI: 1.73-2.13)] and be diagnosed with a concussion or closed-head injury (CHI) [RR: 1.58 (95% CI: 1.35-1.84)]. Most patients were injured by a collision (63.2%). Snow tube and disk riders were more likely to sustain a concussion or CHI compared to sled and toboggan riders [RR: 1.53 (95% CI: 1.18-1.99)]. Injuries predominantly occurred when patients collided with objects in the environment (47.2%). CONCLUSIONS: Although sledding-related injuries decreased over the study period, more research and education to prevent these injuries is needed. The injury patterns and risk of injury type differed by age, with more head injuries sustained by children. Sledding should be performed in obstacle-free areas to reduce the risk of collision and while wearing helmets to mitigate head injuries.

Eye movements and the perceptual span in silent and oral reading.

Previous research has examined parafoveal processing during silent reading, but little is known about the role of these processes in oral reading. Given that masking parafoveal information slows down silent reading, we asked whether a similar effect also occurs in oral reading. To investigate the role of parafoveal processing in silent and oral reading, we manipulated the parafoveal information available to readers by changing the size of a gaze-contingent moving window. Participants read silently and orally in a one-word window and a three-word window condition as we monitored their eye movements. The lack of parafoveal information slowed reading speed in both oral and silent reading. However, the effects of parafoveal information were larger in silent reading than in oral reading, because of different effects of preview information on both when the eyes move and how often. Parafoveal information benefitted silent reading for faster readers more than for slower readers.