1. Dr Hidayathulla Shaikh

2. At the end of lecture student should be able to – Define statistics and biostatistics Know data Evaluation system Reference text books.

3. INTRODUCTION 1. Why we need to know Bio-statistics 3. Application & Uses Of Bio-statistics - As a Science - As a figure 2. Common Statistical Terms

4. COMMON STATISTICAL TERMS

5. STATISTICS Is the application of statistics to health problems. Is the science of Collecting, Presenting, Summarizing, Analyzing & Interpreting sets of data. BIO-STATISTICS

6. DATA: DATA can be defined as a set of values recorded on one or more observational units. Are the set of values of one or more variables recorded on one or more individuals. - OR -

7. BASIC PRINCIPLES OF BIOSTATISTICS 5. Interpretation of Data 1. Collection of Data 2. Presentation of Data 3. Summarization of Data 4. Analysis of Data

8. APPLICATIONS&USES

9. AS A SCIENCE 3.To find CORRELATION between two variables, X and Y, such as height & weight. 1.To define what is NORMAL or health in a population & to find out the LIMITS OF NORMALITY in variables. 2.To find the DIFFERENCE BETWEEN MEANS & PROPORTIONS of normal at two places or in different periods. 4.To find the action of a drug.

10. 6.To find the relative potency of a new drug with respect to a standard drug. 5.To compare the action of two different drugs or two successive dosages of the same drug. 7.To find an association between two variables such as oral leukoplakia and pan chewing OR Dental caries & Sugar intake. 9.In epidemiological studies - the role of causative factors is statistically tested. 8.To test usefulness of sera and vaccines used in the field.

11. 1. Census 2. Registration of vital events-1873 3. Sample Registration system 4. Notification of diseases 5. Hospital Records 6. Diseases registers 7. Record Linkage 8. Environmental health data

12. Health manpower statistics Population surveys

13. 1.VARIABLE 10. STATISTIC 2.CONSTANT 11. PARAMETRIC TEST 3.OBSERVATION. 12. NON PARAMETRIC TEST 4.OBSERVATIONAL UNIT 5.DATA 6.POPULATION 7.SAMPLING UNIT 8.SAMPLE 9.PARAMETER

14. TypeMarks In Course continuous Assessment Behavior & attitude 5 Research 4 Homework 4 Presentation 3 Quiz 4 midterm Written Examination 40 Final Written Examination 40 Total 100

15. 1) Biostatistics for oral health care Jay s kim, Ronald j dailey. 2) Methods in biostatistics B k mahajan.

16. Thank you