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Identifying and substantiating the need for interventions
Book chapter

Identifying and substantiating the need for interventions

Laura N. Gitlin and Sara J. Czaja
Handbook of Intervention Science: From Design to Implementation, pp 213-231
01 Jan 2025
DOI: https://doi.org/10.1016/B978-0-443-21664-0.00029-5

Abstract

Causal pathways Data sources Intervention outcomes Needs statement Population(s) at risk Problem statement Public health need
All behavioral interventions begin by identifying and substantiating a need for intervention. Subsequently, the need for the intervention is continuously reexamined and updated at each stage of the intervention's lifecycle. As such, identifying, substantiating, and updating the “need” for intervention is an essential, fundamental activity that requires ongoing literature reviews and evaluation with end-users and interested parties. When documenting need, eight aspects or dimensions should be considered, which collectively or taken as a whole, support the rationale for an intervention. The specification of these dimensions informs the delivery characteristics of an intervention, the level or levels and behavior(s) to target, and so forth. The goal of this chapter is to describe these eight dimensions that support building and evaluating an intervention and the data sources that can be tapped to substantiate the need.

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