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Health needs assessment
Development and importance of health needs assessment
This is the first in a series of six articles describing approaches to and topics for health needs assessment, and how
the results can be used effectively
John Wright, consultant in epidemiology and public health medicine, a
Rhys Williams, professor of epidemiology and public health, b
John R Wilkinson, deputy director of public health. c
a Bradford Hospitals NHS Trust, Bradford Royal Infirmary, Bradford BD9 6RJ, b Nuffield
Institute for Health, Leeds LS2 9PL, c North Yorkshire Health Authority, York YO1 1PE
Correspondence to: Dr Wright wrightj@brihosp.mhs.compuserve.com
Series editor: John Wright
Most doctors are used to assessing the health needs of their individual patients. Through professional training and clinical
experience we have developed a systematic approach to this assessment and we use it before we start a treatment
that we believe to be effective. Such a systematic approach has often been missing when it comes to
assessing the health needs of a local or practice population.
The health needs of individual patients coming through the consulting room door may not reflect the wider health needs
of the community. If people have a health problem that they believe cannot be helped by the health service,
then they will not attend. For example, many people with angina or multiple sclerosis are not known
to either their local general practitioner or to a hospital specialist. 1 2 Other groups of patients who may need health care but do not demand it include homeless people and people with
chronic mental illness.
Distinguishing between individual needs and the wider needs of the community is important in the planning and provision
of local health services. If these needs are ignored then there is a danger of a top-down approach to
providing health services, which relies too heavily on what a few people perceive to be the needs of
the population rather than what they actually are.
| Summary points
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Health needs assessment is the systematic approach to ensuring that the health service uses its resources to improve the health
of the population in the most efficient way
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It involves epidemiological, qualitative, and comparative methods to describe health problems of a population; identify inequalities
in health and access to services; and determine priorities for the most effective use of resources
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Health needs are those that can benefit from health care or from wider social and environmental changes
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Successful health needs assessments require a practical understanding of what is involved, the time and resources necessary
to undertake assessments, and sufficient integration of the results into planning and commissioning of local services | |
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What is health needs assessment? |
Health needs assessment is a new phrase to describe the development and refinement of well established approaches to understanding
the needs of a local population. In the 19th century the first medical officers for health were responsible
for assessing the needs of their local populations. More recently, in the 1970s the Resource Allocation
Working Party assessed relative health needs on the basis of standardised mortality ratios and socioeconomic
deprivation in different populations, and it used this formula to recommend fairer redistribution of health
service resources.3 The 1992 Health of the Nation initiative was a government attempt to assess national health needs
and determine priorities for improving health.4 Health needs assessment has come to mean an objective and valid method of tailoring health services an evidence based approach to commissioning and planning health services.
Although health needs assessments have traditionally been undertaken by public health professionals looking at their local
population, these local health needs should be paramount to all health professionals. Hospitals and primary
care teams should both aim to develop services to match the needs of their local populations. Combining
population needs assessment with personal knowledge of patients' needs may help to meet this goal.5
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Why has needs assessment become important? |
The costs of health care are rising. Over the past 30 years expenditure on health care has risen much faster than
the cost increases reported in other sectors of the economy, and health care is now one of the largest
sectors in most developed countries.6 Medical advances and demographic changes will continue the upward pressure on costs.7
At the same time the resources available for health care are limited. Many people have inequitable access to adequate health
care, and many governments are unable to provide such care universally. In addition there is a large variation
in availability and use of health care by geographical area and point of provision.8 Availability tends to be inversely related to the need of the population served.9
Another force for change is consumerism. The expectations of members of the public have led to greater concerns about the
quality of the services they receivefrom access and equity to appropriateness and effectiveness.
These factors have triggered reforms of health services in both developed and developing countries. In Britain these reforms
resulted in the separation of the responsibility for financing health care from its provision and in the
establishment of a purchasing role for health authorities and general practitioners. Health authorities
had greater opportunities to try to tailor local services to their own populations, and the 1990 National
Health Service Act required health authorities to assess health needs of their populations and to use
these assessments to set priorities to improve the health of their local population. 10 11 This has been reinforced by more recent work on inequalities in health, suggesting that health authorities
should undertake "equity audits" to determine if healthcare resources are being used in accordance with
need.12
At a primary care level, through fundholding, locality commissioning, and total purchasing projects, general practitioners
have become more central to strategic planning and development of health services. With this increased commissioning
power has come the increased expectation from patients and politicians that decision making would reflect
local and national priorities, promoting effective and equitable care on the basis of need.13 The Labour government has committed itself to ensuring access to treatment according to "need and need
alone," and the key functions of primary care groups will be to plan, commission, and monitor local health
services to meet identified local needs. 14 15
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Needs |
Doctors, sociologists, philosophers, and economists all have different views of what needs are.16-20 In recognition of the scarcity of resources available to meet these needs, health needs are often differentiated
as needs, demands, and supply (fig 1).
Need in health care is commonly defined as the capacity to benefit. If health needs are to be identified
then an effective intervention should be available to meet these needs and improve health. There will
be no benefit from an intervention that is not effective or if there are no resources available.
Demand is what patients ask for; it is the needs that most doctors encounter. General practitioners have
a key role as gatekeepers in controlling this demand, and waiting lists become a surrogate marker and
an influence on this demand. Demand from patients for a service can depend on the characteristics of the patient
or on the media's interest in the service. Demand can also be induced by supply: geographical variation
in hospital admission rates is explained more by the supply of hospital beds than by indicators of mortality
21 22 ; referral rates of general practitioners owe more to the characteristics of individual doctors than to the
health of their populations.23
Supply is the health care provided. This will depend on the interests of health professionals, the priorities
of politicians, and the amount of money available. National health technology assessment programmes
have developed in recognition of the importance of assessing the supply of new services and treatments before their
widespread introduction.
Need, demand, and supply overlap, and this relation is important to consider when assessing health needs (fig 2).20
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Health needs |
The World Health Organisation's definition of health is often used: "Health is a state of complete physical, psychological,
and social wellbeing and not simply the absence of disease or infirmity." A more romantic definition would
be Freud's: "Health is the ability to work and to love."
Healthcare needs are those that can benefit from health care (health education, disease prevention, diagnosis,
treatment, rehabilitation, terminal care). Most doctors will consider needs in terms of healthcare services
that they can supply. Patients, however, may have a different view of what would make them healthierfor example, a job, a bus route to the hospital or health centre, or decent housing.
Health needs incorporate the wider social and environmental determinants of health, such as deprivation,
housing, diet, education, employment. This wider definition allows us to look beyond the confines of the
medical model based on health services, to the wider influences on health (box). Health needs of a population will
be constantly changing, and many will not be amenable to medical intervention.
| Influences on health
- Environment: housing, education, socioeconomic status, pollution
- Behaviour: diet, smoking, exercise
- Genes: inherited health potential
- Health care: including primary, secondary, and tertiary prevention
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Fig 2. Relation between need, supply, and demandcentral area shows ideal relation. Modified from Stevens and Raferty.24
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Health needs assessment |
Assessment of health needs is not simply a process of listening to patients or relying on personal experience. It is a
systematic method of identifying unmet health and healthcare needs of a population and making changes
to meet these unmet needs. It involves an epidemiological and qualitative approach to determining priorities which
incorporates clinical and cost effectiveness and patients' perspectives. This approach must balance
clinical, ethical, and economic considerations of needthat is, what should be done, what can be done, and what can be afforded.25
Health needs assessment should not just be a method of measuring ill health, as this assumes that something can be done
to tackle it. Incorporating the concept of a capacity to benefit introduces the importance of effectiveness
of health interventions and attempts to make explicit what benefits are being pursued. Economists argue
that the capacity to benefit is always going to be greater than available resources and that health needs assessment
should also incorporate questions of priority setting,26 suggesting that many needs assessments are simply distractions from the difficult decisions of rationing.27
For individual practices and health professionals, health needs assessment provides the opportunity for:
- Describing the patterns of disease in the local population and the differences from district, regional, or national disease
patterns;
- Learning more about the needs and priorities of their patients and the local population;
- Highlighting the areas of unmet need and providing a clear set of objectives to work towards to meet these needs;
- Deciding rationally how to use resources to improve their local population's health in the most effective and efficient
way;
- Influencing policy, interagency collaboration, or research and development priorities.
Importantly, health needs assessment also provides a method of monitoring and promoting equity in the provision and use
of health services and addressing inequalities in health. 28 29
The importance of assessing health needs rather than reacting to health demands is widely recognised, and there are many
examples of needs assessment in primary and secondary care. 21 30 31
There is no easy, quick-fix recipe for health needs assessment. Different topics will require different approaches. These
may involve a combination of qualitative and quantitative research methods to collect original information,
or adapting and transferring what is already known or available.
The stimulus for these assessments is often the personal interest of an individual or the availability of new funding for
the development of health services. However, assessments should also be prompted by the importance of the
health problem (in terms of frequency, impact, or cost), the occurrence of critical incidents (the death
of a patient turned away because the intensive care unit is full), evidence of effectiveness of an intervention,
or publication of new research findings about the burden of a disease.
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Why do projects fail? |
Some needs assessments have been more successful than others. Projects may fail for several reasons.31-33
Firstly, what is involved in assessing health needs and how it should be undertaken may not be understood. Educational
strategies can improve the understanding and necessary skills of health professionals, and local public
health teams can provide valuable support and guidance. Common sense can be a more important asset than detailed
methodological understanding.34 Starting with a simple and well defined health topic can provide experience and encourage success.
Secondly, projects may fail because of a lack of time, resources, or commitment. The time and resources required can be
small when shared among professionals in a team, and such sharing has the potential to be team building.
Involving other organisations such as social services, local authorities, or voluntary groups can provide
similar advantages and encourage multiagency working. Integration of needs assessment into audit and education
can also provide better use of scarce time. Such investment of time and effort is likely to become increasingly
necessary in order to justify extra resources.
A third reason is the failure to integrate the results with planning and purchasing intentions to ensure change. The planning
cycle should begin with the assessment of need.28 Objectives must be clearly defined (box) and relevant stakeholders or agenciesbe they primary care teams, hospital staff, health authorities, the voluntary sector, the media, regional
executives, government, or patientsmust be involved appropriately (fig 3). Although such an assessment may produce a multitude of needs, criteria can be used to prioritise
these needsfor example, the importance of a problem in terms of frequency or severity, the evidence of effectiveness
of interventions, or the feasibility for change. Needs assessments that do not include sufficient attention
to implementation will become little more than academic or public relations exercises.
| Questions to ask when assessing health needs
- What is the problem?
- What is the size and nature of the problem?
- What are the current services?
- What do patients want?
- What are the most appropriate and effective (clinical and cost) solutions?
- What are the resource implications?
- What are the outcomes to evaluate change and the criteria to audit success?
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