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In research studies, mortality refers to the loss of participants during the course of a study — not necessarily due to death, but due to dropout, withdrawal, or unavailability of subjects.
🔍 In Research Context:
It’s also called “attrition”.
It can affect the validity and reliability of the results.
🔄 Two Types:
Experimental Mortality (or Subject Mortality):
When participants leave before the study ends, which may cause uneven groups or bias.
Mortality Threat (to Internal Validity):
If the dropouts differ significantly from those who remain, it can distort outcomes and make it unclear whether changes are due to the treatment or the dropout pattern.
🧠 Example:
If 20 people start a weight loss program study and 5 quit halfway, the results from the remaining 15 may no longer fairly represent the original group — especially if the 5 who quit were struggling the most.
For more information:nsda.portal.gov.bd/site/page/1595fdb5-339d-44f1-a7ea-b47476e1b1ee
What else can I help you with?
What is Translational Study?
Translational research transforms scientific discoveries arising from laboratory, clinical, or population studies into clinical applications to reduce cancer incidence, morbidity, and mortality
What are the mortality rates of myringotomy?
Mortality rates are extremely low; case studies of fatalities following myringotomy are rare in the medical literature, and most involve adults.
What has the author Bjarne Bak written?
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When was Harte Research Institute for Gulf of Mexico Studies created?
Harte Research Institute for Gulf of Mexico Studies was created in 2000.
What types of studies are most famous in growth and development research?
The types of studies that are most famous in growth and development research are longitudinal
What are some examples of research writing in the field of academic research?
Examples of research writing in academic research: Research papers – original studies in journals Literature reviews – summaries of existing research Theses/dissertations – for academic degrees Conference papers – presented at academic events Research proposals – plans for future studies Case studies – detailed analysis of a specific subject Policy briefs – research for decision-making Follo More: nsda.gov.bd/site/page/1595fdb5-339d-44f1-a7ea-b47476e1b1ee/-
What is the standard period unit used in scientific research studies?
The standard period unit used in scientific research studies is typically the second.
What does the term "postgraduate" mean and how does it differ from undergraduate studies?
The term "postgraduate" refers to education pursued after completing a bachelor's degree. Postgraduate studies are more specialized and in-depth compared to undergraduate studies, focusing on advanced knowledge and research in a specific field.
What does phdpost doctoral mean?
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What are some examples of a methodological approach in research studies?
Consumer Insights & Market Research Before launching a new hotel brand or redesigning existing spaces, companies conduct extensive market research to track shifting consumer preferences. Targeting Demographics: Studies help determine what younger luxury travelers or business professionals expect from a hotel room. FF&E Validation: Research dictates furniture design—such as shifting away from traditional bulky hotel desks toward flexible, modular lounge seating, because studies show modern travelers prefer working from beds or lobbies. for more:nsda.gov.bd/pages/static-pages/6922ddf8933eb65569e175da
What does research methodology mean?
Research methodology refers to the systematic process of planning, conducting, and analyzing research studies. It involves defining the research problem, choosing the appropriate research design, selecting data collection methods, and interpreting the results. A sound research methodology is crucial for ensuring the credibility and validity of research findings.
