EBN key terms

The deliberate use of the best available research evidence, combined with professional expertise and the client's values and preferences, to guide decisions about nutrition care for individuals and populations.

A structured clinical question format naming the Population, Intervention, Comparison, and Outcome of interest, used to focus a literature search and make evidence retrieval efficient and reproducible.

The systematic judgment of a study's validity, reliability, and relevance, weighing design, bias risk, sample, and applicability before deciding whether findings should change practice.

A hierarchy ranking study designs by their capacity to support causal inference, typically placing systematic reviews and randomized trials above cohort, case-control, and expert opinion.

An experimental study in which participants are randomly assigned to intervention or control groups, reducing selection bias and supporting causal conclusions about a nutrition intervention's effect.

A structured synthesis that uses a predefined protocol and reproducible search strategy to identify, appraise, and combine all relevant studies addressing a focused question, often with meta-analysis.

A statistical technique that pools effect estimates from multiple studies into a single weighted summary, increasing precision while requiring attention to heterogeneity between studies.

The variation in study results beyond chance, arising from differences in populations, interventions, or methods; high heterogeneity limits how confidently pooled estimates can be interpreted.

A graph displaying each study's effect estimate with confidence interval alongside a pooled summary, allowing readers to see consistency, precision, and the overall direction of findings at a glance.

Distortion of an observed exposure-outcome association by a third variable related to both, which can create apparent effects that do not reflect a true causal relationship.

An analysis that includes all randomized participants in their assigned groups regardless of adherence, preserving the benefits of randomization and giving a realistic estimate of intervention effect.

The likelihood that a study's design, conduct, or reporting systematically distorts its results, assessed across domains such as selection, performance, detection, attrition, and reporting.

Distortion introduced when participants drop out differentially between groups, so that those remaining differ from the original sample in ways related to the outcome.

The tendency for studies with positive or statistically significant findings to be published and located more readily, causing reviews to overstate intervention benefits.

Research in which investigators observe exposures and outcomes without assigning them, such as cohort or case-control designs, useful for rare outcomes and long-latency diet-disease relationships.

A result unlikely to have occurred by chance if the null hypothesis were true, conventionally judged by a p value below a preset threshold; it does not by itself indicate clinical importance.

A range of plausible values for a population estimate, calculated at a stated confidence level, conveying both the size and the precision of an observed effect.

A quantitative measure of the magnitude of a difference or association, such as a mean difference or risk ratio, used to judge whether a statistically detectable finding matters in practice.

The number of people who must receive an intervention for one additional person to benefit, calculated as the reciprocal of the absolute risk reduction; lower values indicate greater practical impact.

The arithmetic difference in event rates between control and intervention groups, expressed in percentage points, reflecting the actual change in risk for an individual.

The ratio of an outcome's incidence in an exposed or treated group to that in an unexposed or control group, describing how many times more or less likely the outcome is.

The ratio of the odds of an outcome in one group to the odds in another, commonly reported in case-control studies and often interpreted as approximating relative risk for rare outcomes.

A nutrient required in relatively large amounts to supply energy or structural material, namely carbohydrate, protein, and fat, plus water in some classifications.

The range of intake for a macronutrient expressed as a percentage of total energy that is associated with reduced chronic disease risk while providing adequate essential nutrients.

The average daily nutrient intake level estimated to meet the requirement of half the healthy individuals in a life-stage and sex group; it anchors the calculation of the recommended dietary allowance.

The average daily intake level sufficient to meet the nutrient requirement of nearly all healthy individuals in a group, set above the estimated average requirement to cover variability.

The highest average daily nutrient intake likely to pose no risk of adverse health effects for nearly all people in a group; exceeding it increases risk of toxicity.

The proportion of a consumed nutrient that is absorbed and available for physiological use, influenced by food form, processing, and interactions with other dietary components.

A naturally occurring compound such as phytate or oxalate that binds nutrients or inhibits enzymes, reducing absorption of minerals or other nutrients from the diet.

The amount of a nutrient provided per unit of energy in a food, used to identify foods that deliver substantial nutritional value without excess calories.

The relationship between energy consumed from food and energy expended through metabolism and physical activity; a sustained surplus promotes weight gain and a deficit promotes loss.

The systematic collection and interpretation of anthropometric, biochemical, clinical, dietary, and environmental data to identify nutrition-related problems and their causes.

A clear statement of an identified nutrition problem, its etiology, and its signs and symptoms, written in a standardized format that guides the selection of interventions.

A standardized four-step framework for dietetics practice comprising nutrition assessment, nutrition diagnosis, nutrition intervention, and nutrition monitoring and evaluation.

Objective body-size and composition measures such as weight, height, body mass index, waist circumference, and skinfold thickness used to characterize nutritional status.

A screening index calculated as weight in kilograms divided by height in meters squared, used to classify underweight, overweight, and obesity at the population level.

A measure of central adiposity taken at a defined abdominal landmark, used with body mass index to estimate cardiometabolic risk from visceral fat distribution.

A retrospective interview method in which a client reports all foods and beverages consumed in the previous day, valued for low burden but limited by recall error and day-to-day variability.

A structured survey asking how often specified foods were eaten over a defined period, useful for ranking habitual intake but dependent on memory and a fixed food list.

The planned actions, selected to resolve the nutrition diagnosis, that may include food and nutrient delivery, nutrition education, counseling, and coordination of care.

The individualized recommendation for nutrient and food intake, feeding route, and delivery schedule that specifies what will be provided to meet a client's identified needs.

Nutritional diagnostic, therapeutic, and counseling services provided by a qualified dietetics professional to treat a condition, including individualized assessment and a tailored therapy plan.

A collaborative process in which the practitioner supports a client in setting goals and building the knowledge, skills, and confidence needed to change eating behavior.

A person-centered counseling style that evokes and strengthens a client's own reasons for change through open questions, reflective listening, and affirmation rather than advice giving.

A collaborative conversation in which practitioner and client exchange evidence and preferences to reach an agreed care decision that respects the client's values.

The ongoing measurement of specified indicators compared with baseline and goals to determine whether nutrition interventions are effective and whether the care plan should be revised.

A measurable variable, such as weight, nutrient intake, or laboratory value, selected before intervention to track progress toward a defined nutrition goal.

A goal stated to be specific, measurable, achievable, relevant, and time-bound, giving both client and practitioner a clear basis for judging progress.

The combined likelihood of developing cardiovascular disease and type 2 diabetes, driven by factors such as central obesity, dyslipidemia, hypertension, and dysglycemia.

A ranking of carbohydrate-containing foods by how much they raise blood glucose over two hours compared with a reference food, under standardized conditions.

A measure combining a food's glycemic index with its available carbohydrate content, reflecting both the quality and quantity of carbohydrate in a serving.

The overall combination and frequency of foods and beverages habitually consumed, studied as a whole because foods interact and are eaten together rather than in isolation.

An eating pattern emphasizing vegetables, fruits, legumes, whole grains, nuts, olive oil, and fish, associated in trials with reduced cardiovascular events in high-risk adults.

The range of activities a professional is legally and ethically permitted to perform given their training, licensure, and setting, which may require referral for services outside it.

A client's voluntary agreement to a proposed service after receiving understandable information about its purpose, risks, benefits, alternatives, and right to decline.

The ethical and legal duty to protect a client's private health information from unauthorized disclosure, limited by exceptions such as imminent harm or legal requirement.

An individual's capacity to obtain, process, and understand basic health information and services needed to make appropriate nutrition and health decisions.

A communication technique in which the client explains in their own words what they understood, allowing the practitioner to confirm comprehension and correct misunderstandings.

The process of directing a client to another qualified professional or service when needs fall outside the practitioner's competence, scope, or available resources.

Coordinated teamwork among health professionals from different disciplines who share information and plan care together to achieve integrated, client-centered outcomes.