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COVID-19 pandemic and enrollment of critically Ill children in randomized clinical trials
Sarah B Kandil1, David Panisello-Manterola2, Madhuradhar Chegondi3
1Department of Pediatrics, Section of Critical Care Medicine, Yale University, School of Medicine, New Haven, CT, United States.
Insights
The COVID-19 pandemic lowered enrollment for critically ill children in clinical trials. Parental refusal increased, linked to fewer research staff, impacting trial participation.
Area of Science:
- Pediatric Critical Care Medicine
- Clinical Trial Management
- Epidemiology
Background:
- The COVID-19 pandemic significantly impacted healthcare systems globally.
- Enrollment in pediatric randomized clinical trials (RCTs) may have been affected.
- Parental consent is crucial for pediatric RCT participation.
Purpose of the Study:
- To assess the association between the COVID-19 pandemic and enrollment rates in pediatric RCTs.
- To investigate changes in reasons for non-enrollment, particularly parental refusal.
Main Methods:
- A cross-sectional analysis of two multicenter RCTs involving critically ill children was performed.
- Enrollment data from pre-COVID-19 (November 2017-August 2019) and post-COVID-19 (May 2022-August 2024) periods were compared.
- Reasons for non-enrollment were analyzed for 622 eligible children.
Main Results:
- Enrollment rates decreased significantly from 30.9% pre-COVID-19 to 18.2% post-COVID-19 (P=0.001).
- Parental unavailability decreased, but research staff unavailability increased post-pandemic.
- Despite similar overall parental refusal rates, enrollment failure due to parental refusal rose post-COVID-19 (64.1% vs. 46.3%, P=0.003).
Conclusions:
- The COVID-19 pandemic is linked to reduced enrollment in pediatric critical care RCTs.
- Increased parental refusal post-pandemic is confounded by decreased research staff availability.
- Further research is needed to understand science denialism's role and improve RCT enrollment strategies.
Objective:
To evaluate the association of the COVID-19 pandemic with enrollment rates of critically ill children in randomized clinical trials (RCT). We hypothesized that enrollment rates declined due to increased parental refusal.
Design:
Cross-sectional analysis of 2 multicenter RCTs conducted pre- and post-COVID-19.
Setting:
A total of 5 centers pre-COVID-19 and 15 centers post-COVID-19 conducting pediatric RCTs on enoxaparin prophylaxis against catheter-associated thrombosis.
Patients:
Critically ill children <18 years old with newly inserted central venous catheters.
Interventions:
Randomization to enoxaparin prophylaxis or usual care.
Measurements:
Enrollment rates and reasons for non-enrollment were analyzed in 622 eligible children: 165 pre-COVID-19 (November 2017-August 2019) and 457 post-COVID-19 (May 2022-August 2024).
Main Results:
Enrollment rates declined from 30.9% pre-COVID-19 to 18.2% post-COVID-19 (P = 0.001). Reasons for non-enrollment differed significantly (P = 0.001). Parental unavailability decreased post-COVID-19 (17.7% vs. 34.2%, P < 0.001), while research staff unavailability increased (28.6% vs. 15.8%, P = 0.006). Overall parental refusal rates remained similar (38.6% pre-COVID-19 vs. 39.6% post-COVID-19, P = 0.85). However, among all eligible patients, enrollment failure due to parental refusal increased post-COVID-19 (64.1% vs. 46.3%, P = 0.003). Parental refusal inversely correlated with research staff availability (r = -0.71, P = 0.003).
Conclusions:
The COVID-19 pandemic is associated with lower enrollment rates in RCTs enrolling critically ill children. Increased parental refusal post-pandemic is confounded by reduced research staff availability. Further investigation is needed to assess the role of science denialism and identify strategies to enhance enrollment in RCTs of critically ill children.
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