Detailed Instructions: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Problem:Question: The type of epidemiological study indicated to evaluate, in a population initially exempt from the health problem under study, the association between a risk factor and the onset of the disease is:
Options: <0> Randomized clinical trial. <1> Quasi experimental. <2> Ecological studies <3> Cases and controls study. <4> Cohort study.
Solution:
nursery