indrodection of biostatistics

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it is use for medical Sector student


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Introduction to Biostatistics By Dr. U.S.Shukla Asst. Professor (Statistics) Dept. of Community Medicine People’s college of medical science Bhanpur Bhopal:

1 Introduction to Biostatistics By Dr. U.S.Shukla Asst. Professor (Statistics) Dept. of Community Medicine People’s college of medical science Bhanpur Bhopal

This session covers::

2 This session covers: Origin & Development of Statistics Definition of Statistics Definition of Biostatistics Use of Biostatistics in Medical sector Use of Biostatistics in Physiotherapy


Origin The word statistics have been derived from Latin word “ Status” Italian Word “ Statista “ German word “ statistik” Each of which mean “ Political State”

Development of Statistics:

Development of Statistics In India an efficient system of collecting official and administrative statistics Existed even more then 2000 years ago, During the reign of Chandra Gupta Maurya’s (324-300 B.C.) from Kautilya’s arthshastra it is known that even before 300 B.C. a very good system of collecting vital Statistics and registration of births & deaths was in vogue.

Development of Statistics (Cont.):

Development of Statistics (Cont.) During Akbar’s reign (1556-1605 A.D.) raja todarmal the then land & revenue Minister maintain good records of land & agricultural statistics. In Akbar’s time he conduct a survey to find out the response of administrative behavior of there reign

Development of Statistics (Cont.):

Development of Statistics (Cont.) In the 19th century, statistics increasingly used probability theory , whose initial results were found in the 17th and 18th centuries, particularly in the analysis of games of chance (gambling). By 1800, astronomy used probability models and statistical theories, particularly the method of least squares , which was invented by Legendre and Gauss . Early probability theory and statistics was systematized and extended by Laplace ; following Laplace, probability and statistics have been in continual developmen

Development of Statistics (Cont.):

Development of Statistics (Cont.) Charles S. Peirce (1839—1914) formulated frequentist theories of estimation and hypothesis-testing in (1877—1878) and (1883), in which he introduced " confidence ". Peirce also introduced blinded , controlled randomized experiments with a repeated measures design . 14 Peirce invented an optimal design for experiments on gravity.

Important Contributor To Statistics :

Important Contributor To Statistics Thomas Bayes George E. P. Box Pafnuty Chebyshev David R. Cox Gertrude Cox Harald Cramér

Important Contributor To Statistics:

Important Contributor To Statistics Francis Ysidro Edgeworth Bradley Efron Bruno de Finetti Ronald A. Fisher Francis Galton Carl Friedrich Gauss William Sealey Gosset (“Student”) Andrey Kolmogorov Pierre-Simon Laplace Erich L. Lehmann

Important Contributor To Statistics:

Important Contributor To Statistics Aleksandr Lyapunov Abraham De Moivre Jerzy Neyman Florence Nightingale Blaise Pascal Karl Pearson Charles S. Peirce Adolphe Quetelet C. R. Rao

Important Contributor To Statistics:

Important Contributor To Statistics Walter A. Shewhart Charles Spearman Thorvald N. Thiele John Tukey Abraham Wald

Father of Statistics:

Father of Statistics Sir Ronald A. Fisher

What Is Statistics?:

13 What Is Statistics? Why? Collecting Data e.g., Sample, Survey, Observe, Simulate Characterizing Data e.g., Organize/Classify, Count, Summarize Presenting Data e.g., Tables, Charts, Statements Interpreting Results e.g. Infer, Conclude, Specify Confidence Data Analysis Decision- Making © 1984-1994 T/Maker Co.

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14 Statistics is the science of conducting studies to collect, organize, summarize, analyze, present, interpret and draw conclusions from data . Any values (observations or measurements) that have been collected


15 Biostatistics Biostatistics is the science that helps in managing medical uncertainties


16 “BIOSTATISICS ” (1) Statistics arising out of biological sciences, particularly from the fields of Medicine and public health. (2) The methods used in dealing with statistics in the fields of medicine, biology and public health for planning, conducting and analyzing data which arise in investigations of these branches.

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Use of Biostatistics in medical sector


18 CLINICAL MEDICINE Documentation of medical history of diseases. Planning and conduct of clinical studies. Evaluating the merits of different procedures. In providing methods for definition of “normal” and “abnormal”.


19 PREVENTIVE MEDICINE To provide the magnitude of any health problem in the community. To find out the basic factors underlying the ill-health. To evaluate the health programs which was introduced in the community (success/failure). To introduce and promote health legislation.

Role of Biostatics in Health Planning and Evaluation:

20 Role of Biostatics in Health Planning and Evaluation In carrying out a valid and reliable health situation analysis, including in proper summarization and interpretation of data. In proper evaluation of the achievements and failures of a health programs.

Role of Biostatistics in Medical Research:

21 Role of Biostatistics in Medical Research In developing a research design that can minimize the impact of uncertainties In assessing reliability and validity of tools and instruments to collect the information In proper analysis of data

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Use of Biostatistics in Paramedical Sector

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We use different types of graph & tables to represent our therapy We use different kind of statistical test for showing the difference between two therapy Statistical survey are used to find the popularity of therapy

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24 Any Questions

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Thank You

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