Single blind study- Double blind study
A single-blind RCT is a randomised trial in which one group of individuals involved in the trial does not know the identity of the intervention that is given to each participant. Usually it is the participants or the investigators assessing the outcomes who do not know the identity of the interventions. Single blind designs are used frequently to evaluate educational or surgical interventions. For instance, investigators could evaluate different educational strategies in patients who would be unaware of the different types of strategies that are being compared. In addition, two surgical procedures could be compared under single-blind conditions with the use of identical wound dressings to keep
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Observational study- Experimental study
Case – Control study - Intervention study
Test the difference in the attitude of male and female subjects towards eating junk foods based on the distribution given herewith (at 0.5 level of significance:
What do you understand by formulating a hypothesis? Briefly discuss the different forms of hypothesis.
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Single blind study- Double blind study