Healthcare utilization in children across the care continuum during the COVID-19 pandemic.

OBJECTIVES: Healthcare utilization decreased during the COVID-19 pandemic, likely due to reduced transmission of infections and healthcare avoidance. Though various investigations have described these changing patterns in children, most have analyzed specific care settings. We compared healthcare utilization, prescriptions, and diagnosis patterns in children across the care continuum during the first year of the pandemic with preceding years. STUDY DESIGN: Using national claims data, we compared enrollees under 18 years during the pre-pandemic (January 2016 -mid-March 2020) and pandemic (mid-March 2020 through March 2021) periods. The pandemic was further divided into early (mid-March through mid-June 2020) and middle (mid-June 2020 through March 2021) periods. Utilization was compared using interrupted time series. RESULTS: The mean number of pediatric enrollees/month was 2,519,755 in the pre-pandemic and 2,428,912 in the pandemic period. Utilization decreased across all settings in the early pandemic, with the greatest decrease (76.9%, 95% confidence interval [CI] 72.6-80.5%) seen for urgent care visits. Only well visits returned to pre-pandemic rates during the mid-pandemic. Hospitalizations decreased by 43% (95% CI 37.4-48.1) during the early pandemic and were still 26.6% (17.7-34.6) lower mid-pandemic. However, hospitalizations in non-psychiatric facilities for various mental health disorders increased substantially mid-pandemic. CONCLUSION: Healthcare utilization in children dropped substantially during the first year of the pandemic, with a shift away from infectious diseases and a spike in mental health hospitalizations. These findings are important to characterize as we monitor the health of children, can be used to inform healthcare strategies during subsequent COVID-19 surges and/or future pandemics, and may help identify training gaps for pediatric trainees. Subsequent investigations should examine how changes in healthcare utilization impacted the incidence and outcomes of specific diseases.

"For COVID" or "With COVID": Classification of SARS-CoV-2 Hospitalizations in Children.

OBJECTIVES: Pediatric hospitalization rates are used as a marker of coronavirus disease 2019 (COVID-19) disease severity in children but may be inflated by the detection of mild or asymptomatic infection via universal screening. We aimed to classify COVID-19 hospitalizations using an existing and novel approach and to assess the interrater reliability of both approaches. METHODS: This retrospective cohort study characterized severity of illness and likelihood of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection as the cause of hospitalization in pediatric patients <18 years of age. Subjects had positive SARS-CoV-2 nasopharyngeal testing or were diagnosed with multisystem inflammatory syndrome in children and were hospitalized between May 10, 2020 (when universal screening of all admissions began) and February 10, 2021, at a university-based, quaternary care children's hospital in Northern California. Hospitalizations were categorized as either likely or unlikely to be caused by SARS-CoV-2 (novel approach), and disease severity was categorized according to previously published classification of disease severity. RESULTS: Of 117 hospitalizations, 46 (39.3%) were asymptomatic, 33 (28.2%) had mild to moderate disease, 9 (7.7%) had severe illness, and 15 (12.8%) had critical illness (weighted κ: 0.82). A total of 14 (12%) patients had multisystem inflammatory syndrome in children. A total of 53 (45%) admissions were categorized as unlikely to be caused by SARS-CoV-2 (κ: 0.78). CONCLUSIONS: Although COVID-19 has considerable associated morbidity and mortality in children, reported hospitalization rates likely lead to overestimation of the true disease burden.