My Research Journey
My Research Journey: Imagined a pleasant walk in the garden, turned out to be a marathon with hurdles I still remember the sense of excitement, when I was heading for the first meeting with my guide to discuss my research topic. Thought of learning the research skills and possibility of discovering something new made me […]
Read MoreCase control study – Basic concept
As an epidemiologist, part of many scientific committees, I have yet to encounter a single meeting in which “case-control study” had not created a major turbulence. The biggest problem I realized is that everyone thinks they really know about case control study..and try to strongly protect their concepts..or in most cases “force upon” their concepts […]
Read MoreHow to differentiate case control study from other study designs
How to differentiate case control study from other study designs The following simple criteria and flow diagrams can help us to demystify some of the confusing around case control study It contains two distinct study groups Usually conducted after the proposed outcome had already occurred Study groups are based on the outcome (with and and […]
Read MoreType of probabilities in a contingency table
There are three types of probabilities for contingency table/crosstabs. They are: Marginal probabilities, Joint probabilities and Conditional probabilities. Suppose data is collected in a study of 165 students about their gender and insomnia status. After the collection of data, following 2×2 contingency table is generated: Table 1: Contingency table of Insomnia by Gender Marginal probabilities: […]
Read MoreHeterogeneity in Systematic Review Meta analysis
Heterogeneity in systematic Review Meta-analysis: Variability among studies which included in the systematic review termed as heterogeneity. Why to read heterogeneity ? Studies included in the meta-analysis vary methodologically, clinically, statistically across individual studies. Presence of heterogeneity affects the conclusion of the study and the review. Therefore, our findings may be misleading. How does heterogeneity […]
Read MoreFrequency distribution
What is the best way to summarize a categorical variable? Frequency distribution is the most common way of summarizing a categorical variable. It can be either represented as a tabular form called frequency distribution table or graphically using a bar chart or pie chart. What type of data will we use for this frequency distribution […]
Read MoreWhen can I claim authorship in an article or manuscript?
Research papers are a way of communicating the work done to the scientific world. These research papers play a vital role in building the portfolio of the researchers, aids in decisions of promotion and various other opportunities. There are a lot of conflicts happening in the scientific world over authorship. Authorship accounts for 2 to […]
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