Discussion Paper on Household and Individual Food Insecurity - Executive Summary
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Prepared by Valerie Tarasuk
Malerie Tarasukarch 2001
The views expressed in this report do not necessarily reflect those of Health Canada.
© Valerie Tarasuk, 2001.
Introduction
Food security is a broad concept, encompassing issues related to the
nature, quality, and security of the food supply as well as issues of
food access. As described in Canada's Action Plan on Food Security (1998),
food security "exists when all people, at all times, have physical
and economic access to sufficient, safe and nutritious food to meet their
dietary needs and food preferences for an active and healthy life".
As food insecurity has come to be recognized as a public health problem
and a serious social problem in Canada, there have been calls for assessment
and monitoring activities to appraise the scope of the problem and evaluate
interventions. A number of measurement activities have occurred at the
local, regional and national levels, but there remains no coordinated
plan for monitoring food insecurity nationally or provincially.
This paper presents an examination of issues pertaining to the inclusion
of direct and indirect indicators of food insecurity in a national nutrition
monitoring system, focusing on individual- and household-level food insecurity
that arises in the context of financial resource constraints. Here the
term, food insecurity, is used to denote the limited, inadequate, or insecure
access of individuals and households to sufficient, safe, nutritious,
personally acceptable food both in quality and quantity to meet their
dietary requirements for a healthy and productive life. The focus on limited,
inadequate or insecure access to food due to financial resource constraints
reflects the recognition that, while financial resources are only one
of a range of factors that operate to determine individuals' food consumption
patterns, they are the primary barrier to food access among low income
groups.
While much remains to be understood about the nature and severity of
food insecurity and the short- and long-term consequences of this phenomenon,
the concept of food insecurity has now been clearly elucidated. It can
be understood most simply as deprivation in the basic need for food. Importantly,
the experience of food insecurity is not static but dynamic in nature,
defined by a temporal sequence of events and experiences. Graded levels
of severity have been defined that appear generalizable across groups.
Less severe food insecurity is characterized by qualitative compromises
in food selection and consumption and possibly anxiety related to food
sufficiency. As resources become increasingly depleted, food insecurity
is characterized by quantitative compromises in food intake and the attendant
physical sensation of hunger. At its most severe stage, food insecurity
is experienced as absolute food deprivation (i.e., not eating at all).
Across this continuum of severity, food insecurity also has defined psychological
and social manifestations.
Why Monitor Food Insecurity in Canada?
The profound deprivation that underlies experiences of food insecurity
suggests that this condition is a matter of public health concern and
a social problem worthy of monitoring in its own right. Food insecurity
is also important to monitor as a risk condition for other health concerns.
The dietary manifestations of chronic and severe food insecurity clearly
pose threats to nutritional health and well-being. In addition, there
is emerging evidence that food insecurity can have deleterious social
and psychological consequences for those directly affect by this problem.
Through the systematic monitoring of food insecurity, the incidence and
prevalence of this condition can be identified, and the characteristics
of individuals and households who experience food insecurity can be defined.
Furthermore, through such monitoring the relationship between household-level
problems of food insecurity and changing social and economic conditions,
policies, and intervention programs can be understood. As such, monitoring
food insecurity would lay a valuable foundation for the development of
policies and programs to address this problem.
The fact that food insecurity denotes a dimension of nutritional vulnerability
that is different from but complementary to traditional dietary assessments
means that this problem must be monitored in its own right if we wish
to understand it. The extent and severity of food insecurity cannot be
readily inferred from other nutritional monitoring activities. However,
the measurement of household or individual-level food insecurity in tandem
with other measures of nutritional vulnerability would importantly facilitate
the identification of population subgroups whose nutritional health is
potentially compromised because of financial resource constraints.
Measuring Food Security
The measurement of food insecurity in affluent, western nations has been
the focus of considerable research in recent years. In particular, there
have been marked advances in the development of direct
indicators to measure household food insecurity at a population
level. Four direct measures of food insecurity employed in recent, major
studies in North America and for which measurement properties have been
documented are reviewed in this paper: the food sufficiency status question;
the Community Childhood Hunger Identification Project instrument; the
Radimer/Cornell instrument; and the Food Security Core Module. All of
these instruments have been designed to be administered to the household
head or person most responsible for food and food provision in the household,
and to provide insight into household food insecurity. All four instruments
have been developed and used extensively in the U.S., but all four have
also found their way (in whole or in part) onto Canadian surveys and studies
of food insecurity. Each has built upon the accomplishments of its predecessors.
The most recent instrument, the Food Security Core Module, provides a
brief, well-designed, and thoroughly calibrated measure of severity that
would be suitable for use on Canadian population surveys with minimal
additional work.
Given the substantial resources required to obtain direct measures of
food insecurity in the population and the intrusiveness of these measures,
it is worthwhile to also consider the use of indirect
indicators of food insecurity. Three classes of indirect indicators
are examined in this paper: indicators of financial resource constraints
that could be reasoned to predispose households to food insecurity or
the risk of it; indicators of resource augmentation strategies that suggest
food insecurity (e.g., food bank usage); and indications of programmatic
activities at the community level that could be interpreted to suggest
the presence of local problems of food insecurity. Monitoring poverty,
welfare rates, or food bank usage could yield some insight into problems
of food insecurity, but the usefulness of these indicators is presently
limited by the paucity of population-based data on the relationship between
them and the prevalence and severity of food insecurity.
Recommendations for Further Work
From this examination of conceptual and methodological issues related
to the measurement of food insecurity in Canada, a number of knowledge
gaps are identified. Further work in five specific areas is recommended
to support the inclusion of food insecurity in a national nutrition monitoring
and surveillance system.
- An appraisal of the levels of severity and the
dimensions of food insecurity most relevant to monitor in relation to
policies and programs in Canada.
Conceptually, food insecurity is not a simple binary variable, but a
multidimensional array of behaviours and perceptions. The potential
consequences of food insecurity are also wide ranging and multidimensional.
In undertaking monitoring activities, it is important to consider what
dimensions and what degrees of severity of food insecurity are most
relevant to the Canadian context. The Food Security Core Module captures
levels of severity associated with quantitative food deprivation - a
condition that may be considered the most severe manifestation of food
insecurity. Monitoring such extreme deprivation can be seen as a moral
imperative because such hardship is unconscionable in a country as affluent
as ours. However, it should be recognized that this level of food insecurity
is likely to be much less common in our country than less severe manifestations.
Chronic compromises in dietary quality, for example, are likely to be
more prevalent and may have more serious implications for health and
well-being over the long term than periodic episodes of absolute deprivation.
Similarly, it could be argued that the broader social implications of
chronic food insecurity related to social exclusion and alienation are
relevant to population health irrespective of whether they are associated
with measures of quantitative food deprivation.
Prior to the inclusion of food insecurity as part of a nutrition monitoring
system in Canada, it is imperative that the broader goals of this monitoring
be established. These goals will dictate the needs for measurement.
They will also lay a foundation for the identification of other sociodemographic
and behavioural factors that must be measured in concert with food insecurity
in order to identify vulnerable subgroups.
- Research to further develop direct measures
of food insecurity relevant to nutrition monitoring goals in Canada.
Although an extensive body of research on food security measurement
now exists, there may be a need for some additional research to tailor
existing measures and develop new measures to meet the specific priorities
identified for direct measurement in this country. In particular, research
may be required to i) confirm the suitability of the Food Security Core
Module for use here and establish what categorical measures of household
food security drawn from this scale will be most relevant for monitoring
purposes; and ii) develop additional direct measures of food insecurity
at the household or individual level to extend the understanding that
can be gleaned from the Food Security Core Module. To maximize the contribution
of these initiatives, it is imperative that any new research be grounded
in a thorough understanding of the present literature and that new undertakings
clearly build upon existing work.
Other areas of research that are required to support the appropriate
application and interpretation of a direct measure of food insecurity
for monitoring and program evaluation include studies to determine how
sensitive particular aspects of food insecurity are to changes in household
resources and develop methods to assess the frequency and duration of
particular experiences of food insecurity. Given the differential nature
of individuals' food experiences within households, further research
is also needed to characterize the experiences of individual members
in households defined by varying levels of food insecurity. Importantly,
this research must move beyond present work that differentiates between
women and children's experiences to elucidate age- and gender-related
differences more fully.
- Research to facilitate the comparison of new,
more comprehensive measures of food insecurity to other direct indicators
that have been included on previous population surveys.
Questions on food insecurity have already been included on several population
surveys (e.g., the Canadian Community Health Survey, the National Population
Health Survey, the National Longitudinal Survey of Children and Youth,
and selected provincial nutrition surveys). To facilitate fuller interpretation
of these data and enable systematic comparison of previous survey findings
with more comprehensive measures of food insecurity on future population
surveys, some empirical work is required to determine the relationship
between individual survey items and a systematically-derived set of
scaled indicator questions.
- Research to provide an empirically-based framework
within which to interpret key indirect indicators of household food
insecurity.
Despite the recent development of a direct indicator of household food
insecurity with known measurement properties that is suitable for inclusion
in population surveys, there are likely always to be situations in which
indirect indicators of food insecurity are needed (e.g., at the regional
and community levels where national survey samples may be insufficient
to provide good estimates). Thus it would be important to conduct sufficient
analytic work to provide an interpretive framework for at least three
major indirect indicators of food insecurity: income-based measures
of poverty, welfare rates, and food bank usage. A valuable foundation
for the interpretation of these indicators could be gained now through
the focussed analysis of existing population-level survey data.
- Research to provide a empirical foundation upon
which to interpret measures of household food insecurity in Canada.
Despite the tremendous advances in food security research over the last
decade, much remains to be understood about the short- and long-term
consequences of food insecurity as it arises and is experienced at the
individual and household level in Canada. Research is also needed to
better understand the causes of food insecurity in this country and
to elucidate the relationships between household-level problems of food
insecurity and changing social and economic conditions, social policies,
and intervention programs. A broad range of research into the causes
and consequences of varying levels of severity and chronicity of food
insecurity among Canadian households would importantly inform the interpretation
of monitoring efforts.
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