Developing NICE guidelines: the manual
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1 Ensuring that guideline recommendations are current and accurate
This chapter describes the process and methods for maintaining up-to-date recommendations. Once published, guideline recommendations will enter cycles of monitoring and assessment to ensure they are up to date. This includes updating, no update with a currency statement, refreshing, and modifying or withdrawing the guideline recommendations or topic area (see figure 1).
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1.1 Monitoring
Aims of monitoring
The aim of monitoring is to check that guideline recommendations in prioritised topic areas are up to date. This is done by exploring if there is any new evidence or intelligence to contradict, reinforce (for example, increase the strength of recommendation) or clarify recommendations. Monitoring may also identify new interventions, innovations or topic areas that may need to be considered in a guideline or a suite of guideline recommendations. Finally, it explores changes in context that may mean modifications are needed, for example, changes in policy, infrastructure, legislation or costs.
Proactive monitoring
NICE has more than 350 published guidelines, so the volume of monitoring is considerable. Some topic areas change frequently, which impacts on how up to date the guideline recommendations are. Topic areas are prioritised for monitoring and NICE takes a proactive approach to identify key events that may impact guideline recommendations at any time after publication (for example, a safety alert, publication of a key study, or publication of new related guidance by NICE or other organisations).
NICE identifies events that can affect prioritised guideline recommendations through constant intelligence gathering as recommendations are developed and after they are published. For example, events are identified through:
guideline committees either during the initial development of the guideline or subsequent updates
stakeholders during scoping and validation
enquiries submitted by stakeholders or the public
implementation feedback
safety alerts from the Medicines and Healthcare products Regulatory Agency (MHRA) and Healthcare Safety Investigation Branch (HSIB)
literature searches from other related topic areas
discussions with the National Institute for Health Research (NIHR) and Cochrane about ongoing studies or systematic reviews.
This approach means that NICE can quickly identify changes in the evidence base and current context, and assess the impact on guideline recommendations and the need for any changes.
Events that could affect guideline recommendations include:
publication of a study that is directly relevant to NICE guidance and has the potential to affect recommendations
substantial changes in policy or legislation (an example includes changes to the Chief Medical Officer's physical activity guidelines)
substantial changes in current practice (for example, establishing new diagnostic hubs or a changing care delivery mechanisms)
development of a related piece of NICE guidance that:
contradicts published guideline recommendations
could be included in NICE guideline recommendations (for example, NICE technology appraisal guidance)
withdrawal of a drug from the market, or a clinically significant drug safety update or safety issue reported by the MHRA, Commission on Human Medicines or HSIB.
This list is not exhaustive and individual events will be considered on a case-by-case basis. To make the most efficient use of resources, events are:
triaged, to determine what actions are needed (including exceptional surveillance reviews)
prioritised based on:
safety (always prioritised first)
health and social care system priorities
burden on services
population impact
potential impact on addressing health inequalities
evidence base: is it changing frequently and what is the degree of uncertainty?
what value NICE could add (for example, further improving outcomes for users or patients) by incorporating the new information into a guideline.
Equality and health inequalities issues should be fully considered during proactive monitoring. A new Equality and Health Inequalities Assessment (EHIA) should be prepared, or the existing EHIA should be updated, as appropriate.
1.2 Assessing events identified by monitoring
The NICE surveillance team considers how an event could affect guideline recommendations. This involves seeking feedback from topic experts and may also include further intelligence gathering from health and care system feedback and literature searches of new evidence or ongoing studies, if needed.
Information from topic experts
We usually invite topic experts (including members of NICE's Expert Advisers Panel) to provide their expert views about how an event affects the recommendations, and their knowledge of recent developments in the topic area. For some topic areas, we may seek further specialist input from other experts, if needed. This could include other government organisations, or representatives from a Quality Standards Advisory Committee.
System monitoring from intelligence gathering
If needed, we may seek additional intelligence. This might include:
feedback from NICE teams who have expertise in the topic area under review (for example, the medicines or social care teams)
asking stakeholders or key organisations for their views, including government departments, organisations representing the health and care workforce and the interests of patients, people using services, carers, and the public
external queries and comments received since publication of the guideline recommendations (these are collated by NICE for consideration)
related NICE guidance and quality standards (including placeholder statements in NICE quality standards) developed since the guideline recommendations were published
related guidance developed by other organisations (this may include external content used by NICE or content developed collaboratively with other organisations)
information about guideline recommendations implementation, including data derived from analysis of primary data on their uptake
information about important ongoing studies in the area covered by the guideline recommendations (identified through searches of trial databases)
changes in licensing status of medicines
updated or new national policy.
Evidence monitoring from literature searching
If needed, to support a decision on whether to update any recommendations, published evidence or related guidance is identified by searching a range of bibliographic databases relevant to the topic, generally by using the same databases that were used during the development of the original guideline recommendations. The sources searched may vary depending on the topic. In general, MEDLINE, MEDLINE in Process, Embase, Cochrane Database of Systematic Reviews and Cochrane Central Register of Controlled Trials (CENTRAL) could be considered.
Search approaches
The search approach will vary between topics. The following description of search approaches is not an exhaustive list, and their use should be based on the characteristics of the topic area:
population or population and intervention search as needed for the guideline topic areas with:
randomised controlled trials (RCTs) and systematic reviews as a default
if RCTs are not appropriate because of the topic areas (for example, purely diagnostic), then other study types will be considered
focused searches for a specific question or a new question, meaning that the study type searched for (RCTs or observational studies) should reflect the type expected to address the question
citation search forward or back (this option would be supplemented with either a restrictive full scope search or focused searches)
focused searches for related external guidelines or topic areas if appropriate.
Where appropriate, living evidence monitoring could be set up to continuously monitor the publication of new evidence over a period of time until impact reaches the threshold for actions.
Other considerations
It may be appropriate to consider setting limits for the searches, which could include, but are not limited to:
study design using appropriate search filters
date
location
populations and subpopulations
intervention
service delivery aspect
prognostic factors
sample size.
1.3 Decision making
After assessment, proposals for actions are made, based on:
how up to date the guideline recommendations are in relation to the latest evidence base
original committee judgements
information from topic expert engagement
intelligence gathering and feedback from stakeholder consultation, if relevant
dependencies within NICE content (for example, overlaps with other NICE products)
relative priority to other guideline content developed by NICE
availability of good quality guideline content developed by guideline developers in other organisations
whether NICE is best placed to add value.
The decision also includes an element of judgement.
The possible actions are:
update (specific recommendations, topic areas or whole guideline)
update by collaborating with guideline developers in other organisations
update with curated content from other organisations' guidelines
refresh or make post-publication minor changes and continue monitoring
continue monitoring with latest currency statements
withdraw (either some recommendations or the whole guideline).
Stakeholder consultation, quality assurance and sign-off
Consultations on proposed decisions will only be held if there is value in doing so, for example, if there is uncertainty about the proposed actions. The consultation period would usually be 2 weeks.
Quality assurance on the assessment process of an event and rationales for proposed actions will be done to ensure the final decision is robust and fit for approval by NICE's Centre for Guidelines director or Guidance Executive.
If it is decided that the guideline recommendations need updating, registered stakeholders are informed of the planned approach and the decision is published on the NICE website.
1.4 Defining topic areas for updates
This section covers the methods and processes for defining topic areas for updates. When updating or replacing recommendations or topic areas in a guideline or within a suite of guidelines, amend or use the existing scopes, or develop a separate small update scope (to incorporate into the original scope after publication). For scoping methods and processes for new guidelines or full updates, see the chapter on the scope.
Updates involving a change of scope
Follow the scoping process in the chapter on the scope for updates that involve multiple topic areas within a guideline or across a suite of guidelines (for example, those with complex health and care pathways, complex analysis or new health economic modelling) and for which existing scopes need to be substantially changed. Depending on the complexity and information required for the update, not all steps in the scoping process are needed. Rationales for any deviation from the scoping process should be clearly documented and signed off by NICE staff with responsibility for quality assurance.
Updates with separate small update scopes
For small updates (usually up to 3 review questions) or distinct updates (topic areas already identified as key priority areas), a separate small update scope will usually be produced as an addendum to the original scope. The small update scope will be incorporated into the original scope after publication of the update. The small update scope includes:
any changes to the population or settings included, though it is expected that in most cases these will be the same as for the existing scope document
equality and health inequalities considerations (completion of a new Equalities and Health Inequalities Assessment (EHIA) or addition to existing EHIA)
activities, services, or aspects of care covered by the guideline update
draft review questions
PICO tables for each draft review question (or other appropriate summary depending on review question type).
How the process for defining topic areas differs for small updates
This section details how the process for defining topic areas for updates with unchanged or small update scopes differs from the scope development process for new guidelines or full updates (see the chapter on the scope).
Stage 1: the scoping search
A scoping search may not be needed if a search has been done during proactive monitoring and the update will be looking at the same or similar questions as identified in proactive monitoring.
A scoping search may be useful when:
it is less clear whether or not there is evidence relating to the update, and/or when an overview of the current practice may help define the review question and PICO table in the small update scope
when a search may help with the identification of health inequalities issues.
Stage 2: identifying the population and key issues
If the review questions and review protocols from the original guideline do not need substantial changes for the update, these stages may only involve minor changes. Similarly, the main outcomes may be taken from the original guideline. The core outcomes set databases should be checked as they may have been updated since publication of the current recommendations.
The approach to developing review protocols and the timing for agreeing them should be discussed and agreed with NICE staff with responsibility for quality assurance. If review protocols are developed and agreed before development, then it is possible that only the committee chair and committee members recruited early (before development starts) will be able to provide input to these. If review protocols are agreed during development, the usual process can be followed (see the chapter on developing review questions and planning the evidence review).
Equality and health inequalities issues should still be considered in full, and a new EHIA should be prepared, or the existing EHIA should be updated as needed.
Stage 4: checking the population and selected key issues with stakeholders
There is no scoping workshop. Topic-specific committee members may be recruited early, or existing suite committee or the experts used during proactive monitoring may be asked to provide expertise during scope development.
Stage 5 (consulting on the draft scope) and stage 6 (finalising the scope after consultation)
The small update scope does not go out for consultation because it updates areas that have already been identified in the previously completed scoping. The small update scope is agreed by the full topic committee and signed off by a senior member of NICE staff with responsibility for quality assurance. The small update scope is published on the NICE website alongside the existing scopes. After publication of the update, these different scopes may be merged.
After the small update scope has been used for developing guideline recommendations, the usual guideline consultation process is followed, although the consultation and validation period may be shorter.
When available, health inequalities briefings should be used to inform questions about equality and health inequalities relevant to the guideline. In the absence of a briefing, an additional search for equality and health inequalities issues may be done.
1.5 Updating guideline recommendations or topic areas
This section covers decisions to:
update (specific recommendations, topic areas or whole guideline)
update by collaborating with guideline developers in other organisations
refresh, make post-publication minor changes or updates.
When scheduling updates of guideline recommendations, NICE prioritises key priority areas according to health and care system needs and how quickly evidence changes.
Updates of recommendations or topic areas in guidelines
NICE will prioritise the update of recommendations or topic areas to implement dynamic living guidelines in line with NICE's 5-year strategy. Updating recommendations or topic areas may involve existing topic-specific committees or a newly recruited topic-specific committee.
The scope, small update scope or the NICE website needs to be clear about exactly which guideline recommendations are being updated and which are not, and whether any recommendations will be withdrawn (for example, if they are now covered in another guideline). Recommendations that are outside the scope of an update may be refreshed (see the section on refreshing the guideline).
Updates use the same methods and process as for a new guideline. Updates of topic areas using the scope of the published guideline use the review questions and review protocols already defined by the existing guideline. However, if the review questions and/or protocols are unavailable, need refinement, or if there is ambiguity in the published guideline, the developer may seek advice from the committee members with topic expertise before starting the evidence review.
Updates of guideline recommendations or topic areas are subject to the same level of scrutiny as full updates and new guidelines. The underlying principles of transparency of process and methodological rigour continue to hold. The draft is subject to a 4‑ or 6‑week consultation, depending on length and complexity (see the chapter on the validation process for draft guidelines, and dealing with stakeholder comments). The developer should maintain records appropriate for audit (see the section on committee meetings in the chapter on decision-making committees). The usual process for finalising and publishing the guideline is followed (see the chapter on finalising and publishing the guideline).
Full updates of guidelines
Occasionally, a full update of a guideline is needed. Either:
a new scope is prepared, following the process described in the chapter on the scope or
the scope of the published guideline is used and registered stakeholders are informed.
Sometimes an existing topic-specific committee is asked to update a guideline in their topic area. Sometimes a new topic-specific committee is set up for the update. Recruitment of committee members follows the usual process (see the chapter on decision-making committees). The composition of the committee should be tailored to new requirements if a new scope has been developed. The guideline is developed using the same methods and process as for a new guideline and the draft is subject to the normal consultation (see the chapter on the validation process for draft guidelines, and dealing with stakeholder comments). The developer should maintain records appropriate for audit (see the section on committee meetings in the chapter on decision-making committees). The usual process for finalising and publishing the guideline is followed (see the chapter on finalising and publishing the guideline).
Updates involving collaboration with other organisations
For updates involving collaboration with guideline developers from other organisations, all the above methods and processes should be discussed and agreed with the guideline developer. A collaboration plan should then be produced and signed off by the NICE Centre for Guidelines director and the responsible officer from the organisation developing the guideline.
Refreshing guideline recommendations
Refreshing guideline recommendations allows us to improve the usability of recommendations without changing the intent and therefore without the need for an evidence review or committee input.
Refreshing changes can be made to guideline recommendations even when the proactive monitoring decision is not to update the guideline. All changes to recommendations made as part of the proactive monitoring should be clearly documented in an audit trail (see the section on ensuring that published guidelines are current and accurate).
When it has been agreed which recommendations or topic areas need updating, NICE will identify recommendations that may need to be refreshed as part of the update. Occasionally during development of the update, additional recommendations that are not part of the update may be identified.
Refreshing might involve:
amending or adding cross references to other NICE guidance or hyperlinks to other NICE-endorsed tools or resources
adding or amending information accompanying the recommendations to reflect changes to a medicine's marketing authorisation, to reflect changes in service configuration (for example, a change from primary care trusts to clinical commissioning groups) or a change to an organisation's name
ensuring recommendations take into account the latest government policy or guidelines, for example, on alcohol consumption
amending recommendations to reflect the current practice context, for example, removing references to tools or resources that no longer exist
bringing recommendations in line with NICE's current policy on wording without affecting the intent, for example:
reflecting the involvement of people in decisions about their care
using person-centred language.
Refreshing changes that are made during proactive monitoring, scoping and guideline development should be agreed with NICE staff with responsibility for quality assurance.
Preparing an update of recommendations or topic areas for consultation
Before consultation on an update of recommendations or topic areas within a guideline, the developer should check the following:
All sections have been updated as agreed.
It is clear which sections have been updated and are open for comment during consultation.
Recommendations from sections which have not been updated have been checked to determine whether any changes are essential (for example, if a medicine is no longer available).
Refreshing changes (see the section on refreshing the guideline) to recommendations in sections that have not been updated are kept to a minimum (for example, changing from the passive voice to direct instructions).
A summary of changes to recommendations is included.
The status of any guidance incorporated in the previous version of the guideline recommendations has been confirmed with NICE. For example, has the other guidance been updated?
All recommendations (new, updated and unchanged) have been assessed with respect to NICE's equality duties.
Preparing the final version of an update of recommendations or topic areas for publication
The developer should check:
It is clear which sections have been updated, and whether the recommendations have been updated or amended.
The summary of changes to recommendations has been revised in line with the final recommendations.
The NICE resources to support implementation are checked for current relevance.
For updates done in collaboration with guideline developers in other organisations, all the above processes and methods on presentation and consultation should be discussed and agreed with the external guideline developer. A collaboration plan should then be produced and signed off by NICE Centre for Guideline director and the responsible officer from the external guideline developer.
Post-publication minor updates or changes
On rare occasions, errors or lack of clarity are found after publication of the guideline recommendations, or users may ask for clarification.
Post-publication minor updates or changes to published guideline recommendations are made if an error or lack of clarity:
puts users of health or care services at risk, or affects their care or provision of services or
damages NICE's reputation or
significantly affects the meaning of a recommendation.
Post-publication minor updates or changes are usually triggered by enquiries from the public, notifications from stakeholders, safety reports from MHRA or HSIB, and exceptional surveillance reviews. Examples of when post-publication minor updates or changes will be made include:
inconsistencies in related guideline recommendations as a result of specific guideline updates (for example, blood pressure thresholds in people with type 1 diabetes or type 2 diabetes, people with diabetes and chronic kidney disease, and people with diabetes and hypertension)
when recommendations are no longer in line with current practice
safety issues require addition of further information or context to existing recommendations (for example, checking the trough blood concentration of gentamicin before prescribing gentamicin for neonatal infection, if gentamicin has been given as an intrapartum antibiotic)
lack of clarity on the course of actions from specific recommendations (for example, which recommendations to follow for people who have a clinic blood pressure 180/120 mmHg or higher but without target organ damage).
removal of recommendations because a medicine has been removed from the market or the recommendations have been updated or replaced by recommendations in another guideline.
Post-publication minor updates or changes should only be carried out if it does not involve a change of the evidence review underpinning it. Depending on the nature of the changes, targeted topic expert engagement could be done for validation.
If an error or clarification meets the criteria for changing a published guideline recommendation, NICE's process for dealing with post-publication minor updates or changes is followed. An explanation of the decisions and actions taken is sent to the person or organisation that reported the error or requested clarification.
The guideline recommendations and resources to support implementation are amended if necessary and the changes are explained. Depending on the nature and significance of the change and the time since publication of the original guideline recommendations, registered stakeholders may also be notified.
Routine maintenance
Routine maintenance changes may also be made after publication or update of guideline recommendations. These include minor changes such as updating or fixing broken links or updating standard text in line with agreed template changes.
1.6 Living cycle of guideline recommendations or topic areas
All recommendations or topic areas that are updated, refreshed or changed via post-publication minor updates will be assessed to determine need for continued monitoring. This is to ensure the currency of recommendations is monitored within the guideline portfolio ecosystem.
1.7 References and further reading
Clark E, Donovan EF, Schoettker P (2006) From outdated to updated, keeping clinical guidelines valid. International Journal for Quality in Health Care 18: 165–6
Eccles M, Rousseau N, Freemantle N (2002) Updating evidence-based clinical guidelines. Journal of Health Services Research and Policy 7: 98–103
Shojania KG, Sampson M, Ansari MT et al. (2007) Updating systematic reviews. AHRQ Technical Reviews and Summaries, technical review 16. Rockville, MD: Agency for Healthcare Research and Quality
Turner T, Misso M, Harris C et al. (2008) Development of evidence-based clinical practice guidelines (CPGs): comparing approaches. Implementation Science 3: 45–52

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