Quantitative Research

Intervention Adaptation Log: A FRAME-informed Template

Document what changed in an intervention, why, when and by whom, then assess implications for core functions and implementation.

Published 28 October 2026Updated 28 October 20263 min read
Quantitative Analysis
An annotated delivery record branches into a revised path, suggesting documented intervention adaptation.
Image: Methods Bench
Direct answer

An intervention rarely moves from a protocol into routine delivery unchanged. Staff adjust schedules, materials, roles and delivery channels in response to practical conditions. Some changes preserve the intervention’s purpose. Others may weaken or alter it.

Calling every change a fidelity failure is unhelpful. Calling every change an improvement is equally unhelpful. An adaptation log creates the evidence needed to examine what happened.

In this guide

Define what matters before delivery

Describe the intervention’s intended functions, components and delivery requirements. Where possible, distinguish a core function from the particular form used to deliver it.

For example, the function might be to give participants a timely opportunity to resolve questions before an appointment. The original form might be an in-person orientation. Replacing it with a phone call could preserve that function—or fail if participants cannot receive calls privately or reliably.

That judgement requires evidence. It cannot be settled by declaring the new channel more convenient.

Record changes when they happen

Four adaptation-log fields show a fictional change from group orientation to calls, its reason and timing, intended function, and risks needing evaluation.

A reason for adapting is not evidence that the adaptation worked.

Wiltsey Stirman, Baumann and Miller. The FRAME: reporting adaptations and modifications to evidence-based interventions. 2019. provides a structure for describing adaptations and modifications. A practical log can record the change, timing, decision-maker, reason, target level, whether it was planned and its relationship to fidelity.

In a fictional programme:

FieldExample entry
ChangeOrientation moved from clinic groups to individual calls
TimingAfter the first delivery cycle
ReasonParticipants reported difficulty attending an additional clinic visit
DecisionAgreed by implementation team with documented stakeholder input
Intended functionPreserve opportunity for questions before the appointment
Concern to monitorMissed calls and reduced privacy
Evidence neededReach, completion, participant experience and content delivered

This records a hypothesis about preserving function, not a demonstrated success.

Separate the change from its consequences

“We shortened training because staff were busy” describes a decision and rationale. It does not show whether participants acquired the intended skills or whether delivery quality changed.

Link the adaptation log to process data where possible: attendance, observation, delivery records, interviews or other relevant evidence. Record intended and unintended consequences separately.

Avoid judging the adaptation solely by the final programme outcome. Many other factors may have influenced that outcome, and a favourable result does not prove every modification was harmless.

Notice changes to implementation support

Teams may change supervision frequency, staff incentives or technical support without changing the intervention materials. These changes can still matter substantially.

Specify whether the modification concerns the intervention itself, the strategy used to implement it or the surrounding context. Otherwise, readers cannot understand what would need to be reproduced elsewhere.

Moore et al. Process evaluation of complex interventions: Medical Research Council guidance. 2015. situates implementation, mechanisms and context within process evaluation. Use that broader perspective to avoid turning the log into an isolated list of operational events.

Keep disagreements visible

Different stakeholders may interpret a change differently. Managers may describe reduced session length as efficient, while facilitators describe losing time for practice. Record the competing explanations and investigate their implications.

If a change affects participant risk, consent, burden or approved procedures, follow the relevant governance process. The existence of an adaptation framework does not authorise unapproved protocol changes.

Report what another team needs to know

Explain which version was delivered, where, during which period and with what support. Distinguish a planned adaptation from an undocumented deviation discovered later.

Copy this adaptation-log header

The following compact header is FRAME-informed, not a replacement for the full framework or governance requirements.

change_id | date | site | component | original_form | revised_form | decision_makers | planned_or_reactive | reason | intended_function | fidelity_assessment | evidence_to_collect | observed_consequences

Keep the intended benefit separate from observed consequences. Add a dated assessment when process evidence becomes available, including unintended effects and differences between stakeholder accounts.

A useful log makes implementation learning portable: it shows not just that the intervention changed, but what problem the change addressed and what remained uncertain. Continue with the research library for related design, analysis and reporting guidance.

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Written by Methods Bench.