Development and importance of health needs assessment
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.
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
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
Health needs are those that can benefit from health care or from wider social and environmental changes
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
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
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 receive—from 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.
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.
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 mortality21,22; referral rates of general practitioners owe more to the characteristics of individual doctors than to the health of their populations.23
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.
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.”
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 healthier—for example, a job, a bus route to the hospital or health centre, or decent housing.
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.