Researchers wanted to know it there is a link between SSRI use and bone density.

Question

Researchers wanted to know it there is a link between SSRI use and bone density. To conduct the study. researchers compared the bone density of 250 randomly selected SSRI users to the bone density of 250 randomly selected non-SSRI users of the same gender and age, The researchers found that the bone density of SSRI users was s 10% lower than that of non-SSRI users, that 55RI use decreases bone density? Yes, because this is a designed experiment, which allows for statements of causality, No because this is a designed experiment. No, because this s an observational study. Yes, because this is an observational studios which allows for statements of causality

Explanation / Answer

A designed experiment is a series of runs, or tests, in which you purposefully make changes to input variables at the same time and observe the responses.

An observational study draws inferences from a sample to a population where the independent variable is not under the control of the researcher

the above case is an observational study, and in such a case conclusion of causalty is not correct.

Hence option 3 is the correct answer: No, because this is an observational study.

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