Vy Quoc Ong

Racial disparities in prostate cancer clinical trial participation persist. Sociodemographic and psychosocial predictors of willingness to discuss trials are often studied in separate models that do not account for intercorrelations. Using consent-time data from the Partnering Around Cancer Clinical Trials (PACCT) study (ClinicalTrials.gov identifier: NCT02906241), we examined multidimensional group-based medical mistrust (GBMM) and related factors within one structural equation model (SEM).

Authors retain all rights in any data supplements associated with their articles. The ideas and opinions expressed in this Data Supplement do not necessarily reflect those of the American Society of Clinical Oncology (ASCO). The mention of any product, service, or therapy in this Data Supplement should not be construed as an endorsement of the products mentioned.

Abstract Quadratic forms of multivariate normal variables play a critical role in statistical applications, particularly in genomics and bioinformatics. However, accurately computing small right-tail probabilities (p-values) for large-scale quadratic forms is computationally challenging due to the intractability of their probability distributions, as well as significant numerical constraints and computational burdens.