False, crossover designs are not most useful when the underlying intensity of disease has substantial within-person variability, such as larger seasonal changes.
<h3>When is crossover designs most useful?</h3>
A crossover design is a repeated measurements design such that each experimental unit receives different treatments during the different time periods.
That is the patients cross over from one treatment to another during the course of the trial.
Thus, crossover designs are not most useful when the underlying intensity of disease has substantial within-person variability, such as larger seasonal changes.
Learn more about crossover designs here: brainly.com/question/28039233
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<span>This is wrong. The kind of food that you described is called potentially hazardous food. This includes things like dairy products and things with wheat and things like that. Parasites are organisms that feed off of other organisms like a bacteria or a fungi or similar things that latch onto a host and feed.</span>
Answer:
<em>1</em><em>.</em><em> </em><em>A</em>
<em>2</em><em>.</em><em> </em><em>C</em>
<em>3</em><em>.</em><em> </em><em>C</em>
<em>4</em><em>.</em><em> </em><em>D</em>
<em>4</em><em>.</em><em> </em><em>C</em>
Explanation:
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