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Clinical Trials-Basic Concepts |
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Clinical trails are studies conducted using human participants by researchers in government labs, medical schools, or by pharmaceutical or medical manufacturers, to test how well a new drug, medical device, diagnostic tool, therapy, treatment or form of prevention works to improve health, cure disease, or improve quality of life. The goal is to test efficacy and safety.
Before trials are conducted with human participants, they may have previously been studied with laboratory animals like mice or rats, |
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Analysis of Categorical Data |
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A categorical data research design is one which uses categorical scale measurement.
Scale of Measurement
There are four types of scales that appear in social sciences: nominal, ordinal, interval, and ratio scales. They are categorized into two groups: categorical and continuous scale data. Nominal and ordinal scales are categorical data; interval and ratio scales are continuous data. |
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