Chronic Disease Prevention Flashcards

Question 1

What is a chronic disease in general public health usage?

Accepted Answer

A chronic disease is a health condition that lasts a long time, usually a year or more, and typically cannot be fully cured, though it can often be managed. These conditions develop gradually and often reflect biological, behavioral, and environmental influences over the life course.

Question 2

Why do chronic diseases account for such a large share of illness and death?

Accepted Answer

Chronic diseases cause most deaths and a large share of disability worldwide. Their long duration means people live with them for years, creating sustained demand for care and reducing productivity. Because many share common risk factors, action on one factor can reduce several conditions at once.

Question 3

What is the difference between primary, secondary, and tertiary prevention?

Accepted Answer

Primary prevention aims to stop a disease from starting, for example by reducing exposure to risk factors before any condition appears. Secondary prevention detects existing disease early through screening so that it can be addressed sooner. Tertiary prevention reduces complications and limits disability in people who already have a chronic condition.

Question 4

What does the term incidence mean in chronic disease epidemiology?

Accepted Answer

Incidence is the number of new cases of a condition arising in a defined population during a specified period. It is usually expressed as a rate, which allows comparison between populations of different sizes. Incidence measures how quickly new disease is occurring, which is distinct from prevalence, the total number of people currently affected.

Question 5

How does prevalence differ from incidence when describing a chronic condition?

Accepted Answer

Prevalence is the proportion of a population that has a condition at a given point in time or over a stated period. Because chronic conditions last for years, prevalence is often much higher than incidence. Prevalence is especially useful for planning services, since it shows how many people need ongoing care.

Question 6

What is the purpose of a case definition in chronic disease surveillance?

Accepted Answer

A case definition is a set of standard criteria used to decide whether an individual should be counted as having a particular condition. It may rely on clinical records, laboratory results, or coded diagnoses from administrative data. Consistent case definitions allow different agencies and regions to compare results and to track trends over time.

Question 7

What is a risk factor, and how does it differ from a cause?

Accepted Answer

A risk factor is an attribute, exposure, or behavior associated with a higher probability of developing a condition. A risk factor does not prove that it directly causes the disease, because many risk factors are associated with a disease without being the sole trigger. Establishing causation requires careful study designs and consistent evidence.

Question 8

Why do public health workers distinguish between modifiable and nonmodifiable risk factors?

Accepted Answer

Modifiable risk factors, such as tobacco use, physical inactivity, and poor diet, can be changed through individual choices or policy action. Nonmodifiable factors, such as age and sex, cannot be altered but still help identify people who may benefit from earlier attention. Focusing on modifiable factors gives programs their greatest practical opportunity.

Question 9

What is public health surveillance in the context of chronic disease?

Accepted Answer

Surveillance is the ongoing, systematic collection, analysis, and interpretation of health data so that action can be taken. For chronic disease, it tracks conditions and their risk factors across populations over time. Results guide program planning, resource allocation, and evaluation, and they help identify emerging problems and widening inequalities between groups.

Question 10

What is a risk ratio, and how is it interpreted?

Accepted Answer

A risk ratio compares the probability of an outcome in an exposed group with the probability in an unexposed group. A value of 1 means no difference, a value above 1 means higher risk in the exposed group, and a value below 1 means lower risk. Interpretation must also consider possible confounding.

Question 11

What does an attributable fraction estimate in chronic disease prevention?

Accepted Answer

An attributable fraction estimates the proportion of cases in a population that could be prevented if a risk factor were removed, assuming a causal relationship. Because it depends on how common the exposure is, the same risk factor can have very different attributable fractions in different populations.

Question 12

What is a cohort study, and why is it useful for studying chronic disease?

Accepted Answer

A cohort study follows a group of people over time to see who develops a condition, comparing outcomes among those with and without a given exposure. It suits chronic disease because these conditions develop slowly and need long follow-up. Cohort designs also establish temporal order, showing that exposure came before disease.

Question 13

What is the purpose of age standardization when comparing rates between populations?

Accepted Answer

Age standardization adjusts rates so that populations with different age structures can be compared fairly. Chronic diseases rise steeply with age, so a population with many older adults may show higher crude rates even if its underlying risk is similar. Standardization applies a common reference age distribution to each population before comparison.

Question 14

Why are self-reported data and administrative records both used in chronic disease monitoring?

Accepted Answer

Self-reported data, collected through surveys, capture information such as behaviors, perceived health, and conditions that may not appear in medical files. Administrative records provide large numbers of cases and are often collected routinely. Each source has limitations, so analysts often combine them to cross-check findings and improve completeness.

Question 15

What does a dose-response relationship tell researchers about a risk factor?

Accepted Answer

A dose-response relationship means that the level of risk changes systematically as exposure increases, so more exposure is associated with greater risk. Finding such a gradient strengthens the case that the factor contributes to disease, although it does not on its own prove causation. Researchers also look for biological plausibility and consistency across studies.

Question 16

What is a confounder, and why must it be considered?

Accepted Answer

A confounder is a factor linked to both the exposure and the disease that can distort an apparent association. For example, if people who exercise also tend to eat more vegetables, an analysis that ignores diet may overstate the effect of exercise. Researchers address confounders through study design, matching, and statistical adjustment.

Question 17

What is a dietary pattern, and why do researchers often study it instead of single nutrients?

Accepted Answer

A dietary pattern describes the overall combination of foods and beverages that a person usually eats, rather than the intake of one nutrient alone. Patterns capture how foods and nutrients interact in combination. Patterns such as those rich in vegetables, fruits, whole grains, and legumes are linked with lower chronic disease risk.

Question 18

What role do dietary fiber and whole grains play in chronic disease prevention?

Accepted Answer

Dietary fiber comes from plant foods and is not fully digested, and whole grains are a major source of it. Diets with more fiber are associated with lower risk of cardiovascular disease and type 2 diabetes in observational research. Fiber also supports healthy body weight by promoting fullness.

Question 19

How do sodium and potassium intake relate to blood pressure and cardiovascular risk?

Accepted Answer

Higher sodium intake is associated with higher blood pressure in many populations, and high blood pressure is a major modifiable risk factor for cardiovascular disease. Potassium, abundant in fruits and vegetables, tends to offset some of sodium's effect. Public guidance emphasizes reducing sodium from processed foods while increasing potassium-rich foods.

Question 20

How does energy balance relate to body weight and chronic disease risk?

Accepted Answer

Energy balance is the relationship between calories consumed from food and beverages and energy expended through metabolism and activity. When intake regularly exceeds expenditure over time, body weight tends to increase, and excess body weight is linked to several chronic conditions. Many social and environmental factors also shape it.

Question 21

Why is added sugar treated as a separate target in dietary guidance?

Accepted Answer

Added sugars are sugars and syrups put into foods during processing or preparation, unlike sugars naturally found in whole fruits and milk. Diets high in added sugars tend to be less nutrient dense and are linked with greater energy intake. For that reason, guidance often sets limits on added sugars.

Question 22

What is saturated fat, and how do dietary guidelines describe its role?

Accepted Answer

Saturated fat is a type of dietary fat found mainly in animal products and some tropical oils. Intake of saturated fat, when high, is associated with higher LDL cholesterol, which is linked to cardiovascular disease. Guidance generally recommends replacing saturated fat with unsaturated fats from foods such as nuts, seeds, vegetable oils, and fish.

Question 23

Why do public health nutrition programs often focus on food environments rather than individual choices alone?

Accepted Answer

Food environments, including what is available, affordable, promoted, and visible in neighborhoods, strongly shape what people eat. Individual choices occur within these settings, so changing the environment can influence diets for entire populations with less effort per person. Examples include menu labeling, healthier school meals, and improved access to fresh produce in underserved areas.

Question 24

What is the difference between nutrient density and energy density?

Accepted Answer

Nutrient density describes how many vitamins, minerals, and other beneficial nutrients a food provides relative to its energy content. Energy density describes how many calories a food provides per unit of weight, such as per gram. Vegetables tend to be high in nutrient density and low in energy density.

Question 25

What do current public health guidelines say about weekly physical activity for adults?

Accepted Answer

Widely used guidance recommends that adults get at least 150 minutes per week of moderate-intensity aerobic activity, or 75 minutes of vigorous activity, or an equivalent mix. It also recommends muscle-strengthening activities involving major muscle groups on two or more days each week. More activity generally brings additional benefit.

Question 26

Why is sedentary behavior considered a health concern separate from low exercise levels?

Accepted Answer

Sedentary behavior refers to waking time spent sitting or reclining with low energy expenditure. Research suggests that prolonged sitting carries some risk even among people who meet activity recommendations, so reducing long periods of inactivity is a distinct goal. Breaking up long sitting periods with light movement is one practical strategy.

Question 27

What are the main health effects of tobacco use that prevention programs target?

Accepted Answer

Tobacco use is a leading preventable cause of cancer, cardiovascular disease, and chronic respiratory illness. Smoking exposes the body to many harmful chemicals, and the risks are dose-related, so both quitting and reducing exposure bring benefits. Prevention programs target initiation among young people, support for cessation, and protection from secondhand smoke.

Question 28

How does alcohol consumption relate to chronic disease risk?

Accepted Answer

Alcohol is linked to several chronic conditions, including certain cancers, liver disease, and high blood pressure. Risk generally rises with the amount consumed, so reducing intake lowers risk. Public health approaches to alcohol include pricing policy, limits on availability, and clear labeling.

Question 29

Why is sleep included in discussions of chronic disease prevention?

Accepted Answer

Sleep influences appetite regulation, blood sugar control, blood pressure, and mood, all of which relate to chronic disease risk. Short or irregular sleep is associated with higher risk of weight gain and cardiovascular outcomes in population studies. Sleep is therefore treated as a basic health behavior alongside diet and physical activity.

Question 30

What is social connection, and why does it matter for long-term health?

Accepted Answer

Social connection refers to the quantity and quality of relationships a person has with family, friends, and community. Research associates stronger social ties with better long-term health and lower mortality, although the mechanisms are being studied. Social isolation is a recognized risk factor, so programs that build connection are part of prevention efforts.

Question 31

What is the role of stress management in chronic disease prevention?

Accepted Answer

Chronic stress can influence eating, sleep, and physical activity, and it may affect blood pressure and inflammation. Programs that teach coping skills, promote social support, and encourage healthy routines aim to reduce these pathways. Stress management is generally treated as a supportive component rather than a stand-alone solution.

Question 32

What is the purpose of a motivational interviewing approach in lifestyle programs?

Accepted Answer

Motivational interviewing is a collaborative counseling style that helps people explore their own reasons for changing behavior. Practitioners ask open questions, reflect what they hear, and support the person's sense of confidence rather than telling them what to do. It is used to support changes in activity, eating, and tobacco use.

Question 33

What is a population health approach, and how does it differ from an individual approach?

Accepted Answer

A population health approach aims to improve health across an entire group by changing conditions that affect many people at once, such as environments, policies, and social norms. An individual approach focuses on helping one person change behavior or access care. Population strategies often reach more people with less effort per person.

Question 34

What is a logic model, and how is it used in prevention program planning?

Accepted Answer

A logic model is a visual or written map that links a program's resources and activities to its intended outputs, short-term outcomes, and long-term impact. It helps planners state assumptions clearly and identify what should be measured at each stage. Teams use logic models during design and evaluation.

Question 35

What are the key elements of a sound program evaluation in chronic disease prevention?

Accepted Answer

A sound evaluation defines clear objectives, selects measurable indicators, and establishes a baseline so that change can be detected. It also includes a comparison group where feasible, collects data consistently over time, and considers unintended effects. Results should be reported honestly, including limitations, so that decision makers can judge the evidence.

Question 36

What is a quality improvement cycle, and how is it applied to prevention services?

Accepted Answer

A quality improvement cycle is a repeating process of planning a change, testing it on a small scale, studying the results, and acting on what is learned. In prevention services, teams might use it to improve how often eligible patients are offered a counseling visit. Repeating the cycle allows gradual, evidence-based refinement.

Question 37

Why do health records need standardized coding for chronic conditions?

Accepted Answer

Standardized codes allow the same condition to be recorded consistently across clinics, hospitals, and regions, which makes data comparable. Coding systems also support billing, reporting, quality measurement, and research. Inconsistent coding can hide trends or distort rates, so training and periodic audits are important for data quality.

Question 38

What is a registry in chronic disease management, and what does it record?

Accepted Answer

A registry is an organized database that collects standardized information about people with a specific condition or exposure, such as diagnoses and follow-up status. Registries support population monitoring, quality reporting, and outreach to people due for routine checks. Data protection rules and consent requirements govern how registry information is stored and shared.

Question 39

What is the purpose of screening programs in chronic disease prevention, and what criteria guide them?

Accepted Answer

Screening programs aim to identify people with early or unrecognized disease, or elevated risk, so that they can be referred for follow-up. Established criteria include that the condition is important, that an accurate test exists, and that early treatment improves outcomes. Screening should be weighed against harms such as false positives.

Question 40

How can prevention programs address health inequalities between population groups?

Accepted Answer

Prevention programs can address inequalities by reaching groups with the highest burden, using culturally appropriate materials, and removing barriers such as cost, transportation, and language. Stratifying data by income and geography helps reveal gaps that overall averages conceal. Programs should evaluate outcomes separately for each group to confirm that benefits are shared fairly.

Chronic Disease Prevention Flashcards

1Core Concepts and Definitions

2Surveillance and Population Measures

3Diet and Nutrition Science

4Physical Activity and Lifestyle

5Programs and Quality Systems

Learning Resources