A study to find the relation between heart disease and fat consumption, a person goes to general hospital collects number of heart disease cases and goes to foods department and collects average fatty foods consumption, the study is A. Ecological study B. Cohort study C. cross sectional study D. Nested case control
Hmm yes question is really confusing...
Guess guides are also very confused cos a repeat in another exam was a different answer
Same confusion... I go with ecological but cross sectional also seems possible
Actually m confused between c and d