Volunteer Effect
Encyclopedia
The volunteer effect is a form of selection bias, sometimes referred to as self-selection or volunteer bias. This phenomenon is based on the idea that individuals who volunteer to participate in epidemiological studies are different in some way from the target ...
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Reader's Guide
- Acculturation
- Bioterrorism
- Community-Based Participatory Research
- Community Health
- Community Trial
- Cultural Sensitivity
- Demography
- Determinants of Health Model
- Ecological Fallacy
- Epidemiology in Developing Countries
- EuroQoL EQ-5D Questionnaire
- Functional Status
- Genocide
- Geographical and Social Influences on Health
- Health, Definitions of
- Health Behavior
- Health Belief Model
- Health Communication
- Health Communication in Developing Countries
- Health Disparities
- Health Literacy
- Life Course Approach
- Locus of Control
- Medical Anthropology
- Network Analysis
- Participatory Action Research
- Poverty and Health
- Quality of Life, Quantification of
- Quality of Well-Being Scale (QWB)
- Race and Ethnicity, Measurement Issues With
- Race Bridging
- Rural Health Issues
- Self-Efficacy
- SF-36® Health Survey
- Social Capital and Health
- Social-Cognitive Theory
- Social Epidemiology
- Social Hierarchy and Health
- Social Marketing
- Socioeconomic Classification
- Spirituality and Health
- Targeting and Tailoring
- Theory of Planned Behavior
- Transtheoretical Model
- Urban Health Issues
- Urban Sprawl
- Applied Epidemiology
- Chronic Disease Epidemiology
- Clinical Epidemiology
- Descriptive and Analytic Epidemiology
- Disability Epidemiology
- Disaster Epidemiology
- Eco-Epidemiology
- Environmental and Occupational Epidemiology
- Field Epidemiology
- Genetic Epidemiology
- Injury Epidemiology
- Maternal and Child Health Epidemiology
- Molecular Epidemiology
- Neuroepidemiology
- Nutritional Epidemiology
- Pharmacoepidemiology
- Psychiatric Epidemiology
- Reproductive Epidemiology
- Social Epidemiology
- Veterinary Epidemiology
- Alzheimer's Disease
- Anxiety Disorders
- Arthritis
- Asthma
- Autism
- Avian Flu
- Bipolar Disorder
- Bloodborne Diseases
- Cancer
- Cardiovascular Disease
- Diabetes
- Foodborne Diseases
- Gulf War Syndrome
- Hepatitis
- HIV/AIDS
- Hypertension
- Influenza
- Insect-Borne Disease
- Malaria
- Measles
- Oral Health
- Osteoporosis
- Parasitic Diseases
- Plague
- Polio
- Post-Traumatic Stress Disorder
- Schizophrenia
- Severe Acute Respiratory Syndrome (SARS)
- Sexually Transmitted Diseases
- Sick Building Syndrome
- Sleep Disorders
- Smallpox
- Suicide
- Toxic Shock Syndrome
- Tuberculosis
- Vector-Borne Disease
- Vehicle-Related Injuries
- Vitamin Deficiency Diseases
- Waterborne Diseases
- Yellow Fever
- Zoonotic Disease
- Attack Rate
- Attributable Fractions
- Biomarkers
- Birth Cohort Analysis
- Birth Defects
- Case-Cohort Studies
- Case Definition
- Case-Fatality Rate
- Case Reports and Case Series
- Cohort Effects
- Community Trial
- Competencies in Applied Epidemiology for Public Health Agencies
- Cumulative Incidence
- Direct Standardization
- Disease Eradication
- Effectiveness
- Effect Modification and Interaction
- Efficacy
- Emerging Infections
- Epidemic
- Etiology of Disease
- Exposure Assessment
- Fertility, Measures of
- Fetal Death, Measures of
- Gestational Age
- Health, Definitions of
- Herd Immunity
- Hill's Considerations for Causal Inference
- Incidence
- Indirect Standardization
- Koch's Postulates
- Life Course Approach
- Life Expectancy
- Life Tables
- Malnutrition, Measurement of
- Mediating Variable
- Migrant Studies
- Mortality Rates
- Natural Experiment
- Notifiable Disease
- Outbreak Investigation
- Population Pyramid
- Preclinical Phase of Disease
- Preterm Birth
- Prevalence
- Prevention: Primary, Secondary, and Tertiary
- Public Health Surveillance
- Qualitative Methods in Epidemiology
- Quarantine and Isolation
- Screening
- Sensitivity and Specificity
- Sentinel Health Event
- Syndemics
- Administrative Data
- American Cancer Society Cohort Studies
- Behavioral Risk Factor Surveillance System
- Biomedical Informatics
- Birth Certificate
- Cancer Registries
- Death Certificate
- Framingham Heart Study
- Global Burden of Disease Project
- Harvard Six Cities Study
- Healthcare Cost and Utilization Project
- Health Plan Employer Data and Information Set
- Healthy People 2010
- Honolulu Heart Program
- Illicit Drug Use, Acquiring Information on
- Medical Expenditure Panel Survey
- Monitoring the Future Survey
- National Ambulatory Medical Care Survey
- National Death Index
- National Health and Nutrition Examination Survey
- National Health Care Survey
- National Health Interview Survey
- National Immunization Survey
- National Maternal and Infant Health Survey
- National Mortality Followback Survey
- National Survey of Family Growth
- Physicians' Health Study
- Pregnancy Risk Assessment and Monitoring System
- Relational Database
- Rochester Epidemiology Project
- Sampling Techniques
- Secondary Data
- Spreadsheet
- Youth Risk Behavior Surveillance System
- Epidemiology in Developing Countries
- Ethics in Health Care
- Ethics in Human Subjects Research
- Ethics in Public Health
- Evidence, Legal Admissibility of Scientific
- Genocide
- Harm Reduction
- Health, Definitions of
- Health Disparities
- Informed Consent
- Institutional Review Board
- Tuskegee Study
- War
- Association, Genetic
- Chromosome
- Epigenetics
- Family Studies in Genetics
- Gene
- Gene-Environment Interaction
- Genetic Counseling
- Genetic Disorders
- Genetic Epidemiology
- Genetic Markers
- Genomics
- Genotype
- Hardy-Weinberg Law
- Heritability
- Human Genome Project
- Icelandic Genetics Database
- Linkage Analysis
- Molecular Epidemiology
- Multifactorial Inheritance
- Mutation
- Newborn Screening Programs
- Phenotype
- Teratogen
- Twin Studies
- Biomedical Informatics
- EuroQoL EQ-5D Questionnaire
- Evidence-Based Medicine
- Formulary, Drug
- Functional Status
- Health Care Delivery
- Health Care Services Utilization
- Health Economics
- International Classification of Diseases
- International Classification of Functioning, Disability, and Health
- Managed Care
- Medicaid
- Medicare
- Partner Notification
- Quality of Life, Quantification of
- Quality of Well-Being Scale (QWB)
- SF-36® Health Survey
- Agent Orange
- Alcohol Use
- Allergen
- Asbestos
- Bioterrorism
- Child Abuse
- Cholesterol
- Circumcision, Male
- Diabetes
- Drug Abuse and Dependence, Epidemiology of
- Eating Disorders
- Emerging Infections
- Escherichia coli
- Firearms
- Foodborne Diseases
- Harm Reduction
- Hormone Replacement Therapy
- Intimate Partner Violence
- Lead
- Love Canal
- Malnutrition, Measurement of
- Mercury
- Obesity
- Oral Contraceptives
- Pain
- Physical Activity and Health
- Pollution
- Poverty and Health
- Radiation
- Sexual Risk Behavior
- Sick Building Syndrome
- Social Capital and Health
- Social Hierarchy and Health
- Socioeconomic Classification
- Spirituality and Health
- Stress
- Teratogen
- Thalidomide
- Tobacco
- Urban Health Issues
- Urban Sprawl
- Vehicle-Related Injuries
- Violence as a Public Health Issue
- Vitamin Deficiency Diseases
- War
- Waterborne Diseases
- Zoonotic Disease
- Budd, William
- Doll, Richard
- Ehrlich, Paul
- Epidemiology, History of
- Eugenics
- Farr, William
- Frost, Wade Hampton
- Genocide
- Goldberger, Joseph
- Graunt, John
- Hamilton, Alice
- Hill, Austin Bradford
- Jenner, Edward
- Keys, Ancel
- Koch, Robert
- Lind, James
- Lister, Joseph
- Nightingale, Florence
- Pasteur, Louis
- Public Health, History of
- Reed, Walter
- Ricketts, Howard
- Rush, Benjamin
- Snow, John
- Tukey, John
- Tuskegee Study
- American College of Epidemiology
- American Public Health Association
- Association of Schools of Public Health
- Centers for Disease Control and Prevention
- Council of State and Territorial Epidemiologists
- European Public Health Alliance
- European Union Public Health Programs
- Food and Drug Administration
- Governmental Role in Public Health
- Healthy People 2010
- Institutional Review Board
- Journals, Epidemiological
- Journals, Public Health
- National Center for Health Statistics
- National Institutes of Health
- Pan American Health Organization
- Peer Review Process
- Publication Bias
- Public Health Agency of Canada
- Society for Epidemiologic Research
- Surgeon General, U.S.
- United Nations Children's Fund
- U.S. Public Health Service
- World Health Organization
- Allergen
- Apgar Score
- Barker Hypothesis
- Birth Defects
- Body Mass Index (BMI)
- Carcinogen
- Case Reports and Case Series
- Clinical Epidemiology
- Clinical Trials
- Community Health
- Comorbidity
- Complementary and Alternative Medicine
- Effectiveness
- Efficacy
- Emerging Infections
- Escherichia coli
- Etiology of Disease
- Evidence-Based Medicine
- Gestational Age
- Intent-to-Treat Analysis
- International Classification of Diseases
- International Classification of Functioning, Disability, and Health
- Latency and Incubation Periods
- Life Course Approach
- Malnutrition, Measurement of
- Medical Anthropology
- Organ Donation
- Pain
- Placebo Effect
- Preclinical Phase of Disease
- Preterm Birth
- Public Health Nursing
- Quarantine and Isolation
- Screening
- Vaccination
- African American Health Issues
- Aging, Epidemiology of
- American Indian Health Issues
- Asian American/Pacific Islander Health Issues
- Breastfeeding
- Child and Adolescent Health
- Epidemiology in Developing Countries
- Hormone Replacement Therapy
- Immigrant and Refugee Health Issues
- Latino Health Issues
- Maternal and Child Health Epidemiology
- Men's Health Issues
- Oral Contraceptives
- Race and Ethnicity, Measurement Issues With
- Race Bridging
- Rural Health Issues
- Sexual Minorities, Health Issues of
- Urban Health Issues
- Women's Health Issues
- Additive and Multiplicative Models
- Analysis of Covariance
- Analysis of Variance
- Bar Chart
- Bayesian Approach to Statistics
- Bayes's Theorem
- Bias
- Binomial Variable
- Birth Cohort Analysis
- Box-and-Whisker Plot
- Capture-Recapture Method
- Categorical Data, Analysis of
- Causal Diagrams
- Causation and Causal Inference
- Censored Data
- Central Limit Theorem
- Chi-Square Test
- Classification and Regression Tree Models
- Cluster Analysis
- Coefficient of Determination
- Cohort Effects
- Collinearity
- Community-Based Participatory Research
- Community Trial
- Confidence Interval
- Confounding
- Control Group
- Control Variable
- Convenience Sample
- Cox Model
- Critical Value
- Cumulative Incidence
- Data Management
- Data Transformations
- Decision Analysis
- Degrees of Freedom
- Dependent and Independent Variables
- Diffusion of Innovations
- Discriminant Analysis
- Dose-Response Relationship
- Doubling Time
- Dummy Coding
- Dummy Variable
- Ecological Fallacy
- Economic Evaluation
- Effect Modification and Interaction
- Factor Analysis
- Fisher's Exact Test
- F Test
- Geographical and Spatial Analysis
- Graphical Presentation of Data
- Halo Effect
- Hawthorne Effect
- Hazard Rate
- Healthy Worker Effect
- Hill's Considerations for Causal Inference
- Histogram
- Hypothesis Testing
- Inferential and Descriptive Statistics
- Intent-to-Treat Analysis
- Internet Data Collection
- Interquartile Range
- Interrater Reliability
- Intervention Studies
- Interview Techniques
- Kaplan-Meier Method
- Kappa
- Kurtosis
- Latent Class Models
- Life Tables
- Likelihood Ratio
- Likert Scale
- Logistic Regression
- Log-Rank Test
- Longitudinal Research Design
- Matching
- Measurement
- Measures of Association
- Measures of Central Tendency
- Measures of Variability
- Meta-Analysis
- Missing Data Methods
- Multilevel Modeling
- Multiple Comparison Procedures
- Multivariate Analysis of Variance
- Natural Experiment
- Network Analysis
- Nonparametric Statistics
- Normal Distribution
- Null and Alternative Hypotheses
- Observational Studies
- Overmatching
- Panel Data
- Participatory Action Research
- Pearson Correlation Coefficient
- Percentiles
- Person-Time Units
- Pie Chart
- Placebo Effect
- Point Estimate
- Probability Sample
- Program Evaluation
- Propensity Score
- Proportion
- p Value
- Qualitative Methods in Epidemiology
- Quasi Experiments
- Questionnaire Design
- Race Bridging
- Random-Digit Dialing
- Randomization
- Random Variable
- Rate
- Ratio
- Receiver Operating Characteristic (ROC) Curve
- Regression
- Relational Database
- Reliability
- Response Rate
- Robust Statistics
- Sample Size Calculations and Statistical Power
- Sampling Distribution
- Sampling Techniques
- Scatterplot
- Secondary Data
- Sensitivity and Specificity
- Sequential Analysis
- Simpson's Paradox
- Skewness
- Spreadsheet
- Stem-and-Leaf Plot
- Stratified Methods
- Structural Equation Modeling
- Study Design
- Survival Analysis
- Target Population
- Time Series
- Type I and Type II Errors
- Unit of Analysis
- Validity
- Volunteer Effect
- Z Score
- All
- A
- B
- C
- D
- E
- F
- G
- H
- I
- J
- K
- L
- M
- N
- O
- P
- Q
- R
- S
- T
- U
- V
- W
- X
- Y
- Z
Research Methods
