Question

In 2003, Sudden Acute Respiratory (SARS) appeared in several countries, mainly Asia. The disease was determined to have been caused by a virus that could be spread from person-to-person from the index case occurring in mainland China. The table below reflects the total number of report cases of SARS and the deaths that occurred. image Which should be used in this case if we wished to measure the number of deaths from SARS?

Country	Cases with SARS	Deaths With SARS
Canada	249	37
China, Mainland	5326	347
China, Hong Kong	1755	296
China, Taiwan	687	84
Singapore	206	31
United States	75	0
Viet Nam	63	5
Total	8361	800

What type of study was this, Observational or experimental?

Answer 1

This study is observational as the survey is performed and data for the death caused by the SARC (Severe acute respiratory syndrome) is collected in different countries with the cases of the SARC affected as well as the deaths by the SARC.

Furthermore this disease index shows the prevalence as well as severity of the disease in different countries on the basis of the observations.

Hence it's observational study rather than the experimental on.