Question

1. For the following studies, state the study design used by the investigators.

(d) States with higher per capita use of social network sites (e.g., Facebook, Instagram) were found to have higher divorce rates.

(e) To evaluate the relationship between prenatal diet quality and risk of childhood neuro-developmental disorders, diet was measured in 27529 pregnant women. The offspring of these women were then followed for 5 years to ascertain which children developed neurodevelopmental disorders.

Answer 1

(d)

the study design used by the investigators. : Case control - observational study

Explanation:

In this study, two existing groups (here States with higher per capita use of social network sites (e.g., Facebook, Instagram) and States with lower per capita use of social network sites (e.g., Facebook, Instagram) differing in outcome (here divorce rates) are identified and compared on the basis of some causal attribute.

(e)

the study design used by the investigators. : Observational Prospective Cohort Study:

Explanation:

The study design is Observational Prospective Cohort Study because it is planned in advance and carried out over a future period of time. First, diet was measured in 27529 pregnant women. The offspring of these women were then followed for 5 years to ascertain which children developed neurodevelopmental disorders.