A total of 3500 patient with thyroid cancer are identified and surveyed by patient interviews with reference to past exposure to radiation. The study design most appropriately illustrates –

Social & Preventive Medicine

A total of 3500 patient with thyroid cancer are identified and surveyed by patient interviews with reference to past exposure to radiation. The study design most appropriately illustrates –

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