Changes in version 1.5.3 (2026-02-27) - Same as previous version. Changes in version 1.5.2 (2026-02-26) - Same as previous version. Changes in version 1.5.1 (2026-02-26) - Updates to README following transfer of ownership from dempz to The-Kids-Biostats. Changes in version 1.5.0 (2025-11-13) - Same as previous version. Changes in version 1.4.2 (2025-11-13) - Initiate deprecation procedure for unused functions. Changes in version 1.4.1 (2025-10-28) - Make dependencies more strict. Changes in version 1.4.0 (2025-10-28) - aducust_flag(): Resolve inconsistent flagging amongst NAs. - aducust_flag(): Add parameter to set own variable name. Changes in version 1.3.1 (2025-09-15) - Fix bug in icd_morb_flag() which improperly treats pre-specified flags containing "dagger" variable. - Fix bug in twoway following updates. - Fig bug in tests following updates. Changes in version 1.3.0 (2025-08-26) - Add check_att() function that flags expectation of education record in visibility window by DOB. - Add testing for check_att(). Changes in version 1.2.3 (2025-08-22) - Same as previous version. Changes in version 1.2.2 (2025-08-14) - Same as previous version. Changes in version 1.2.1 (2025-08-14) - Same as previous version. Changes in version 1.2.0 (2025-08-13) - Same as previous version. Changes in version 1.1.2 (2025-08-13) - Same as previous version. Changes in version 1.1.1 (2025-08-13) - Same as previous version. Changes in version 1.1.0 (2025-08-12) - Same as previous version. Changes in version 1.0.2 (2025-07-30) - Same as previous version. Changes in version 1.0.1 (2025-07-18) - Same as previous version. Changes in version 1.0.0 (2025-07-17) - Same as previous version.