{'fraction_non_alphanumeric': 0.05220588235294118, 'fraction_numerical': 0.03676470588235294, 'mean_word_length': 4.510121457489879, 'pattern_counts': {'":': 0, '<': 2, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Increased risk of head injury in pediatric patients with attention deficit hyperactivity disorder.

OBJECTIVE
The prevalence of attention deficit hyperactivity disorder (ADHD) in the general pediatric population is 7%, whereas the prevalence in trauma is unknown. We hypothesized pediatric patients with ADHD would have a higher risk of involvement in a mechanism of injury (MOI) requiring constant attention to surroundings, such as a bicycle collision.


METHODS
The Pediatric Trauma Quality Improvement Program (2014-2016) was queried for patients with ADHD. Patients, less than 16 years of age, with ADHD were compared to those without ADHD.


RESULTS
The prevalence of ADHD was 2.5% (2,866). ADHD patients had higher risk for bicycle collision (odds ratio [OR], 1.85; 95% confidence interval [CI], 1.59-2.15; p < .001). ADHD bicyclists were less likely to wear a helmet (9.4% vs. 18.2%, p = .003) and had a higher rate of traumatic brain injury (TBI; 55.6% vs. 39.7%, p < .001), compared to non-ADHD bicyclists.


CONCLUSIONS
Pediatric ADHD patients have a 60% higher risk of being involved in a bicycle collision. ADHD patients that are involved in a bicycle collision are less likely to wear a helmet with a higher rate of TBI. Increased public awareness, education, and supervision may help reduce risk of bicycle collisions and TBI in this population.