An investigator obtained an increased incidence of a disease due to low fibre diet in a country by obtaining data from the health authorities and food industry of the country. This type of study is called:

Social & Preventive Medicine

An investigator obtained an increased incidence of a disease due to low fibre diet in a country by obtaining data from the health authorities and food industry of the country. This type of study is called:

A study is to be conducted with regards to the fat content…

'There has been a gradual increase in number of non-communicable disease cases…

All of the following are done to remove Confounding except