Basic Bio Statistics Module2

8/3/2019 Basic Bio Statistics Module2

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ACCE

Biostatistics Training Course

Spring 2005

O. Dale Williams, MPH, PhD

Professor of Medicine and Biostatistics

University of Alabama at Birmingham


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Questions

Why are you taking this course?

What do you hope to get out of the course?

Are you concerned about the level of

mathematics that will be required?

Have you taken any statistics courses

previously?


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Course Purpose

To provide non-biostatisticians with the ability to

understand and utilize basic biostatistical conceptsand tools and to facilitate their capacity to seek and

utilize biostatistical expertise as may be required

when conducting their own research or reviewingthat done by others. This course is required for all

MPH degree program students as a component of

the web-based integrated core curriculum.


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Course Objective

Student successfully completing this course should:

Understand and be able to use the basic conceptsof biostatistics;

Understand and be able to use the basic tools ofbiostatistics;

Be able to work effectively with a professionalbiostatistician on problems requiring moreadvanced concepts and tools;

Be able to read, understand and judge theappropriateness of the use of biostatisticalconcepts and tools in the basic public health

literature.


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Course Topics

Types of data, tables and graphs, frequencydistribution

Measures of central tendency and dispersion

Population versus sample, sampling distributions,

normal distribution Point estimates, confidence intervals

Hypothesis testing concepts

z-tests, t-tests Sample size determination


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Course Topics (Contd.)

Tests for proportions and variances

Analysis of variance--one-way, randomized

blocks, factorial designs

Regression and correlation

Contingency tables, chi-square tests

Multiple linear regression

Relative risk, odds ratios, logistic regression


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In order to provide a more concrete picture of what

the course will cover, we will take a brief look at a

relatively recent article in theAmerican Journal of

Public Health. To understand this article, you will

need to understand the basic concepts and many of

the basic tools of biostatistics. We will review this

article now and then come back and review it again

at the end of the course.

What We Will Cover


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Article for Review


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The game plan is for you to be able to understand,interpret and utilize appropriately the information

in articles such as this. Further, you should be able

to question whether something was properly done.

The Game Plan


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The basic strategy we will follow is to first focus on

the types of data, then examine tables and graphs and

frequency distributions. This is critical background

for understanding samples and populations, estimates

of population parameters and the fundamental

elements of hypothesis testing. We will then address

z-tests, t-tests and many of the other biostatistical

tools routinely appearing inAJPH. In fact, much of

the material will be presented in the context of

relatively recentAJPHarticles.

The Strategy

Basic Bio Statistics Module2

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