Question

in this type of epidemiological studies, patients with disease are matched with individual with similar characteristics, but do not have the disease. in another type, patients past behavior and record are studied. however, in this type the effect of preventions or treatments is studied on patients. since the latter study involves future outcomes, it is also

Explanation:

In analytical epidemiological studies, patients with a disease are compared with non - diseased individuals with similar characteristics. Experimental studies focus on the effects of prevention or treatment on patients and are prospective as they look at future outcomes. Retrospective studies examine past behavior and records, which is not the case described here.

Answer:

Analytical, Experimental, Prospective