Lesson 1 Flashcards
Introduction to biostatistics and epidemiology
The study of distribution and determinants of health, disease, or injury in human populations and the application of this study to the control of health problems
Epidemiology
The science and art of dealing with variation of data in order to obtain reliable results and conclusions.
Also the science and art which deals with collection, tabulation, presentation, analysis and drawing conclusion from numerical data
Statistics
Application of statistics to problem in the biological sciences, health and medicine
Biostatistics
Father of Biostatistics
Francis Galton
Physical method to the study of diseases, check efficacy of vaccines, illness,morbidity and martality
Medical statistics
Whether healthy or not, crude birth rate
Health statistics
Vital events, birth, death, marriage
Vital statistics
Used to estimate the extent of the disease in the population
Survey study
Designed to monitor or detect specific disease
Surveillance study
Investigate association between an exposure, often therapeutic treatment and disease outcome. Individuals are intentionally placed into treatment groups by investigators
Experimental study
Investigate association between an exposure and disease outcome.
They rely on natural allocation of individuals to exposed and non exposed groups
Observational study
Provides an exploratory assessment of the data from the study
Descriptive statistical method
Exploratory data analysis techniques
Organization and summarization of data
Tables and graphs
Summary measures
The data collected by a particular person or organization for his/her own use from primary source
Primary data
Methods of collecting primary data
Direct personal observation
Indirect oral investigation
Investigation through schedules
The data collected by some other person for his/her own use but the investigator can also use it
Secondary data
Sources of secondary data
Published official report
Journal or newspaper
Local government publication
University and research institute publication
Categorical data (types of variables)
Qualitative variable
Numerical data (type of variables)
Quantitative data
Number of children in family, blood sugar, blood pressure
Always whole number
Discrete data
Measurement can be made to a precise value
Decimal number
Continuous data
When the study looks at only one type of variable
Univariate data
When a study examines the relationship between two variable
Bivariate data
(Sources of data) performed in various departments like physiology, biochemistry, etc
Experiment
(Sources of data) are carried out by health workers in the field to know the magnitude of the problem for implementation of control measures
Survey
These are registers or books maintained over a long period for vital statistics like birth, death, marriage, etc
Record
An attribute that describes a person, place or thing
Variable