National Institutes of Health Brain Development Cohorts Data Hub Tools R package NBDCtools version 1.1.0 A suite of functions to work with data from the National Institutes of Health Brain Development Cohorts Data Hub. The package provides tools to create, clean, process, and filter datasets and associated metadata. These utilities are intended to simplify reproducible data-preparation for future research. Software Depends: R (>= 4.3.0) Imports: arrow, chk, cli, dplyr, glue, magrittr, purrr, readr, stringr, sjlabelled, jsonlite, hms, tidyr, rlang, utils, tibble, stats, sjmisc, haven, crayon, utils Suggests: testthat (>= 3.0.0), usethis, knitr, rmarkdown, naniar, NBDCtoolsData Le Zhang <dairc.service@gmail.com> Comprehensive R Archive Network (CRAN) Le Zhang [aut, cre] (ORCID: <https://orcid.org/0009-0008-0205-2150>), Janosch Linkersdoerfer [aut] (ORCID: <https://orcid.org/0000-0002-1577-1233>) GPL (>= 3) 2026-03-23 application/tgz https://CRAN.R-project.org/package=NBDCtools doi:10.32614/CRAN.package.NBDCtools