Impact of COVID-19 pandemic on traumatic brain injury emergency department visits, interfacility transfer and mortality in the United States, 2016-2020: a cross-sectional study.

OBJECTIVE

The aim of this study was to determine how the COVID-19 pandemic affected patient demographics, injury mechanisms, interhospital transfers and mortality of patients with traumatic brain injuries (TBIs) treated in US emergency departments (EDs).

DESIGN

This cross-sectional study analysed 2016-2020 Nationwide Emergency Department Sample (NEDS) data.

SETTING

US EDs contained in the NEDS.

PARTICIPANTS

Participants were patients with moderate and severe TBI who visited the ED.

PRIMARY AND SECONDARY OUTCOME MEASURES

Probability sampling design and survey weights generated nationally representative estimates of ED visits by patient demographics, hospital characteristics and COVID-19 diagnosis and the top four leading TBI causes. To assess COVID-19 impact, we calculated the per cent change of estimated TBI ED visits and disposition outcomes from 2016 to 2019 and 2019 to 2020, and proportion and 95% CI of injury severity groups and admitted/transfer by hospital type and trauma centre level. A multivariable logistic regression model identified the mortality OR by patient demographics, injury severity, hospital characteristics and COVID-19 positive diagnosis.

RESULTS

In 2020, there were 527 123 ED visits nationally for TBI, 4.3% higher than 2016 but 1.0% lower than 2019. Patients with TBI transferring to short-term hospitals and other facilities increased by 16.0% and 18.2%, respectively, from 2016 to 2019 and were 3.7% and 14.1% higher in 2020 than in 2019. An estimated 3317 patients with TBI died (in ED or later in hospital) in 2020, which is 9.8% higher than 2019. Firearm-related TBI proportion was 15.1% higher in 2020 than in 2019. Patients with TBI with injury severity scores 25-75 were significantly higher at nontrauma (29.4% vs 31.9 %) and level III trauma centres (34.9% vs 38.2%) in 2020 than in 2019. Patients with TBI treated at rural hospitals had significantly higher odds of mortality (OR=1.95, CI=1.58-2.40) than those at urban hospitals.

CONCLUSIONS

TBI patient mortality was higher at all US hospital types and almost all trauma centre levels in 2020 than in 2019. Patients with TBI treated at rural hospitals had a significantly higher mortality risk.