HELED Health Need assessment 17.9.2007 Grete Botten

HELED

Health Need assessment

17.9.2007

Grete Botten

Signature (unit, name, etc.)

The goal of the course

• Exploring the demographical and epidemiological changes of health problems and diseases (medical needs)

• Epidemiological changes will be related to the political, social and economic situation for various population groups (gender and age, socio-economy, ethnicity, etc) and in different countries and priority questions

• Demographical and epidemiological data will be used to assess future need for health care in different settings


Learning objectives

• Be familiar with demographic terms, trends and projections • Be able to find and use vital statistics in planning health

services• Know basic epidemiological concepts and be able to use them

in order to perform need assessment• Be able to identify epidemiological changes globally and to

present evidence as to why this changes have happened• Be able to interpret trends and use techniques to make

projections to estimate need for future health care services• See the relationship between the concepts need, demand and

supply• Relate need to priority and effectiveness• Use need assessment as basis for resource allocation


A systematic method of identifying unmet health and healthcare needs of a population, and making changes to meet those unmet needs

The objective is toSpecify services that will improve the health of the population

What is Health Needs Assessment (HNA)?


Central concepts related to health need assessment

• Needs• Demand• Supply

• Efficiency• Priority


Health Needs Assessment

• Used for service planning, monitoring/ evaluation, responding to changing needs

• Internal market/commissioning (like England)

• Three approaches to HNA have been suggested:- Epidemiological (focus in this course)- Corporate- Comparative


The idea of need assessment• Health services may be based on two opposite

ideologies– Based on planning within a public ownership – Based on market and competition

• Within a planned service without market mechanism, facilities and capacity should meet the need of the population– Need assessment relevant for planning the services (within budget)– Need assessment relevant for the purchaser in in a provider/purchaser

split model

• Within a competitive market services will develop in response to the demand– Need assessment relevant for the owners, as they need to know the

market situation


What is included in Health Needs Assessment?

• Defining “disease” and services• Know the prevalence of diseases• Know the number that should be served• Know the medical guidelines for examination and

treatment - “state of the art”• Know the services available and their cost


How should need be defined?

• Medical definition– Linked to diagnosis

– Linked to guidelines for examination and treatment/care

– Often expressed as the optimal, no resource limitations

• Lay people/patient defined– Linked to suffering

– Linked to human/patient’s right

• Management defined– Linked to resources and “the contract”

• Politically defined– Linked to patients’ rights

– Linked to resources

– Linked to priority


Person with a health problem

Seeks health care

Get an examination of a GP – and treatment and follow up

Is referred to specialist health care/hospital

Get further examinations and treatment

Is followed up by various professionals/GP

N

E

E

D

?

The entire population


”Need” for health careA medical concept refecting

• Need is supposed to be linked to ”objective” prevalence of disease/illness and the existing “state of the art” examinations, for treatment and care

• Need is related to measures for a population that reduces their risk for becoming ill

• Need is thereby defined according to criteria given by health professional

But • Need links to the process of being diagnosed/not diagnosed, based on

symptoms, complains and questions about being sick• Need is closely inked to possibilities and expectations and links to

medical and lay people’s culture and beliefs• Need has a political dimension and is linked to priority• Within public health the political dimension is most evident

Saying that• Need is not (only) objective and globally equal for the equal

diseases/patients or populations


Relation between medical and lay peoples need conncept

Lay people perspective

Political perspectine

Sick/need Not sick

Medical perspective

Disease/need Agree about need

Who define need

No disease Who define need

Agree about no need


Felt

Expressed Normative

1 2

4

3Description

1 A need is felt and expressed, but notidentified as a normative need

2 A need is felt, and identified as a normativeneed, but not expressed.

3 A need is felt, expressed and identified as anormative need

4 A need is not felt, but it is expressed andidentified as a normative need.


Unmet needs essential to identify

• Identifying unmet need requires a public health focus which includes those not getting/seeking services

• Need large surveys to identify those not identified through the health services

• The relationship between – needs (unidentified, unmet, and met) – services (appropriate and inappropriate)


Factors that will influence need for health care in a population

• Demographic changes• New technology (both increase and reduce demand)• Prevention like vaccination, less smoking (public

health measures)….• Identification of risk factors and possibility for

reduction (need assessment in itself)• New knowledge and changing attitudes


Demand for health care

An economic concepts, reflecting

• The percieved need for services– Population

– Patients

– Health personell (throug their referrals …)

• The willingness (ability) to pay for the services– Services are unlikely to be paid directly

– Asymmetric information….

• What influences demand?


Supply of health care

An economic concepts, reflecting

• What services are offered (in the market)• The price of those services

– Often unknown both for ”buyer and seller”, at least in a public system

• What will influence supply


Need, demand and supply - summary

• Need (medical) relates to the prevalence of a disease – what people might benefit from and the number of people with a need

• Demand relates to what is actually asked for in a market – expressed need

• Any difference between them is unmet need• Supply relates to which services are offered in the marked• Met need is the services the population actually gets

However• Need at the political/policy level relates to priority and efficiency


NEED DEMAND

SUPPLY

More details in Stevens


• In a ”perfect situation” need, demand and supply would be equal

• Need may exceed demand• Demand may exceed need (as it is medically defined

and prioritized)• Supply may be less than demand (and need)

resulting in regulation/rationing – and queuing• May supply be higher than demand?? Unstable

situation


Different scales/levels of HNA

• National level• Regional level/County level• Municipality level• Community• GP/clinical level


National level• Relevant for

– National strategies to improve the services for eg• Specific/defined patient group • Build new facilities

– Public health activities eg• Legislation• Vaccination program (influenza)

– Reduce inequity eg• Assess the unmet need in various groups (based on diagnosis or

social criteria)– Monitoring the situation / evaluation – Allocate resources according to needs

• On national level important question: – Do all geographical areas get equal amount of resources, related to their

population (need)?– Do all population/patient groups get equal access to the health services as

response to their need


Regional/county level

• Need assessment relevant when – services are delivered at the regional level (provider)

– public health programs aim at reaching a regional population

• The same questions as at national level


Local municipality/community level

• In a provider/purchaser split model (know what to buy)

• Planning necessary services for the local population/various patient groups

• Hire health personnel to cover the need of the population, eg. in a patient list system, for nursing homes etc

• For offering local private services


Focus i HNA

• Individual need or populations’ need?– Focus is populations’ need (as a sum of the individual needs)– Public health has per see a population approach

• Specific diagnosis or relevant services?– Focus is on need for services more that diagnosis – Different medical diagnoses may need the same services

• The past, present or future?– Focus is on the future (developing services for the number of

people in the future)– Implement public health measures that reduces health problems in

the future


Health Needs Assessment

• Used for service planning, monitoring/ evaluation, responding to changing needs

• Internal market/commissioning

• Three approaches to HNA have been suggested:- Epidemiological- Corporate- Comparative


Epidemiological approach

• Statement of the problem• Subcategories (i.e. type 1, type 2 and gestational diabetes;

severity categories for dementia)• Prevalence and incidence• Services available and their costs• Effectiveness and cost-effectiveness of services• Quantified models of care and recommendations• Outcome measures, audit methods and targets• Information and research requirements


Components in an epidemiological approach to HNA• Defining the problem and objectives• Define the population • Prevalence and incidence of the actual health

problem (in relation to treatment possibilities, not etiology)

• Number intended to be covered/treated• Models and guidelines for treatment• Available services, their cost and their cost-

effectiveness• Recommendation• Model for future evaluation• Research requirement


Corporate Approach

• Based on the demands, wishes and perspectives of interested parties - professional, political and public views

• Blurs difference between need and demand, and between science and vested interest

• Encouraged by the 1989 reforms with its ‘local voices’ and current emphasis on partnership and collaboration [and public involvement]

• Essential if policies are to be sensitive to local circumstances


Comparative approach

• Contrasts the services received in one area with those elsewhere

• Should take into account local population characteristics (demography, mortality, morbidity)


Methodological aspects

• Approaches to Health Need Assessment– Population perspective– Use indicators that may express need (suurogates may be

valuable)–

• Types and sources of data (vital statistics, demography mm)

• Analysing and interpreting the data

• Conclusions


Incidence/prevalence of disease

Number of people

Existing services Effectiveness/Cost/effectiveness

The future services


Nee

d

Time

2005

Illustration how need may be developing in a population

2015

The supply


Table 3 in Stevens - etc. • The concepts Efficacy/effectiveness

• Size of effect (scaled)

• Quality of evidence about effectiveness– Several RCTs

– One RCT

– Clinical intervention trial (non RCT)

– Uncontrolled experiments

– Opinion based on experience

– Non evidence


Methodological problems related to

• Inadequate date on incidence/prevalence• Inadequate date on effectiveness and

cost/effectiveness• Lack of agreement on threshold for intervention• Heterogeneous patient group• Treatment complex and often several possibilities


Role of need assessment i NHS

• Health care needs of a defined population• Appraisel of service options for meeting the needs• Specification of pattern of service provision• Choosing providers• Contracts

• Health services is bought on behalf of a population• Populations ability to benefit from health care must

be included• A balance between enough information and not too

many details


Summary

• Need will be defined and discussed in a medical context, both within care and public health

• Demograpfy must to be taken into consideration, a population approach

• In four cases you will apply such need data and relate them to reality in different settings

• Use of need indicator as basis for resource allocation will be discussed in a last lecture

Documents

HELED Health Need assessment 17.9.2007 Grete Botten