Posted: September 11th, 2016

An investigator wants to assess the association between caffeine consumption and stomach cancer.

Question 1:
Please indicate the most appropriate study design for the following research problems, and justify your choice:
a) An investigator wants to assess the association between caffeine consumption and stomach cancer.
b) People with irritable bowel syndrome commonly suffer from abdominal pain, bloating, gas, diarrhea and constipation. A researcher wants to study if probiotics can help in reducing these symptoms.
c) In order to decide on an appropriate budget for health awareness campaigns in schools to fight children obesity, the Ministry of Health needs to estimate the current magnitude of the problem in the different age categories.
d) An orthopedic surgeon wants to investigate if there is a relation between playing organized sports before the age of 10 and knee damage that requires total knee replacement after the age of 60.
e) A physician working in an antenatal healthcare unit suspects that women receiving folate supplements in the first trimester of their pregnancy have a lower risk of delivering babies with neural tube defects.