GRAB

Provides a comprehensive suite of genome-wide association study (GWAS) methods specifically designed for biobank-scale data. The package offers computationally efficient and robust association tests for time-to-event traits (e.g., Bi et al., 2020 doi:10.1016/j.ajhg.2020.06.003), ordinal categorical traits (e.g., Bi et al., 2021 doi:10.1016/j.ajhg.2021.03.019), and longitudinal traits (Xu et al., 2025 doi:10.1038/s41467-025-56669-1). Additionally, it includes functions for simulating genotype and phenotype data to support research and method development.

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