Health Statistics Exam 1

Involves the techniques and procedures dealing with collection, organization, analyzing, interpretation, and presentatino of data

• 1. Education- basic and applied knowledge
• 2. Clinical Practice- Deal with patient
• 3. Research- expand knowledge

• Improve Health Profession
• Improve service
• Improve treatment and prevention of disease and disorders

• Descriptive- Use data to describe sample
• Inferential- Use sample data to make conclusions about the population

• Causation- When on variable directly affects another
• Association- When two variables have a strong observed connection

A "hidden factor" that can influence other variables.

An orderly arrangement of values grouped in to rows and columns

Since they are not very interesting, tables should be used sparingly

Displaying information related to several levels of a variable

• Row- across
• Column- down

• One variable
• Two or more variable

• Emphasizes each category's relation to the whole
• Chart must be incluse
• Useful for qualitative data

• One-Variable
• Grouped (or two or more variable)

Grouped bar chart in which the separate groups are colored coded and graphed together

A graphic technique used to display the relationship between to continuous variables.

Used to display trends

Relationship between one quanitity to another. Numbers are expressed as a fraction or separated by a colon.

Relationship between one quanitity and the whole

Proportion x's 100

View the distribution of data as it is sorted within each class

Which class has the lowest frequency

Arrangement- order

What is the midpoint of that class

24-26, 24, 25, 26- 3 the number of classes within a class

• Construct by writing the first digits in the first column- stem.
• Write the second digits of all the numbers relating to each of the first digits- leaf

Plot of the frequency distribution table

Same as historgram, except connect midpoint of class to make continuous line

• Researcher designs and imposes treatments
• Best way to demonstrate causation
• Researcher has control over subjects

• Ethics
• Expense

• Factors being studied already exist
• Quickest and cheapest way to collect data
• More acceptable to conduct on humans

Less able to account for lurking variables

People bein gstudied, people we get data from. Represent population.

Conditions we impose

Status quo, normal or no treatment.

Subject is unaware they are not being treated

Mimick a procedure

Subject doesn't know what group they are in

Neither the subject nor the researcher know treatment assignments

Experiment conducted on humans.

• Interest in Topic
• Design project
• Background/rationale project introduction
• Compare your project results