difference between self-efficacy scores in older adults, health and medicine homework help

1.What is
the difference between self-efficacy scores in older adults who exercise and
the scores of those who do not?

2.For
patients of 70 years and older, how effective is the use of the influenza
vaccine at preventing flu as compared to patients who have not received the
vaccine

3. How
effective are anti-depressive medications on anxiety and depression?

Next
address the following for the above questions

•  Identify an appropriate research
design.

•  Discuss the strengths and weaknesses
of the design.

•  Provide a rationale for the design
you selected

Please
use references no later than 5 years.. Apa format.

Using a
qualitative study, you can determine how patients from different backgrounds
think and feel about the phenomenon of having a central venous line. Unlike
quantitative research, it is difficult to generalize qualitative data.

Remember:
Qualitative designs generate theory.