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Chapter-08 Assessment of Risk

BOOK TITLE: Biomedical Research Methodology

Author
1. Das Ranjan
2. Das PN
ISBN
9789350250174
DOI
10.5005/jp/books/11438_8
Edition
1/e
Publishing Year
2011
Pages
9
Author Affiliations
1. Lady Hardinge Medical College and Associated Hospitals, New Delhi, India
2. Delhi Institute of Rural Development, New Delhi, India
Chapter keywords
Assessment of risk, Absolute risk (incidence), Relative odds (or), Relative risk, Rate ratios, Risk difference, Rate differences, Etiological fraction.

Abstract

After data has been collected and compiled, now the researcher would want to know if there is any excess risk or reduced risk in any particular study group or in relation to any particular exposure. The methods to be utilized for reaching such a conclusion needs proper understanding of Assessment of Risk and forms the content of discussion of Chapter 8. We have included both techniques used for assessing risk, direct as well as indirect. In the direct methods we have included risk ratio (or relative risk), risk difference (or attributable risk); and among the indirect methods we have included the relative odds (or odd’s ratio), the rate ratios and rate differences for exposure and disease.

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