Inclusion Across the Lifespan - Policy Implementation

NIH Inclusion Across the Lifespan in Research Involving Human Subjects

This page describes the NIH policies and procedures on Inclusion Across the Lifespan in research involving human subjects.

The purpose of the Inclusion Across the Lifespan Policy is to ensure individuals are included in clinical research in a manner appropriate to the scientific question under study so that the knowledge gained from NIH-funded research is applicable to all those affected by the researched diseases/conditions. The policy expands the Inclusion of Children as Participants in Clinical Research Policy to include individuals of all ages. The policy also:

  • Clarifies potential justifications for age-based exclusion criteria
  • Requires participant age at enrollment to be provided in progress reports

The Inclusion Across the Lifespan policy applies to all grant applications submitted on or after January 25, 2019. Until then, ongoing research and grant applications/proposals are subject to the Inclusion of Children in Clinical Research Policy.

See our Policy Information website for links to the policies and additional information.

Other age-related requirements for investigators:

  • Inclusion of individuals of all ages must still be addressed in competing and non-competing grant applications.
  • On the new SF424 (R&R) Version E, to be used for applications with due dates on/after January 25, 2018, investigators specify the age range of study participants and attach inclusion information in Section 2- Study Population Characteristics of the PHS Human Subjects and Clinical Trials Information Form. See the Application Guide for instructions.

Additional Resources



Original Posting Date
Inclusion Across the Lifespan Policy Infographic A snapshot of key basic information regarding the Inclusion Across the Lifespan Policy PDF January 10, 2018
Inclusion of Children Case Studies (SCIENTIFIC)
Case Studies have been developed to assist Investigators in evaluating when children should be included in research studies supported by the NIH. Website

March 26, 1999
Decision Tree for Participation of Children in Research This is a tool for deciding if the inclusion of children is appropriate for a specific study. It is an attachment to the 03/06/98 NIH Guide, and only applies to applications submitted for due dates BEFORE January 25, 2019. Website

(Staff only)
March 6, 1998

Have additional questions? Contact the Inclusion policy team: