Dina is leading a study of a group of children whose health variables and risk factors will be tracked from kindergarten through high school. Which type of design study is Dina using?单项选择题
A
longitudinal
B
prospective
C
cross-sectional
D
retrospective

Question

Dina is leading a study of a group of children whose health variables and risk factors will be tracked from kindergarten through high school. Which type of design study is Dina using?

BlackTom AI · Accepted Answer

The core idea in this question is the temporal design of the study. 
Option 1: longitudinal. This choice aligns with tracking health variables and risk factors for the same group of children over an extended period, from kindergarten through high school. That sustained, repeated observation over time is the hallmark of a longitudinal study. 
Option 2: prospective. While a prospective study is a type of longitudinal design that follows participants forward in time from a starting point, simply saying the study is prospective would be more specific than the prompt requires. The question emphasizes the overall design type (longitudinal) rather than narrowing to the forward-looking aspect. 
Option 3: cross-sectional. A cross-sectional design collects data at a single point in time, providing a snapshot rather than a trajectory. Since Dina is tracking individuals across many years, cross-sectional is incorrect. 
Option 4: retrospective. A retrospective design looks backward in time, typically using existing records or recall to study exposures and outcomes after they have occurred. This study is forward-tracking from kindergarten onward, not looking back, so retrospective is not appropriate. 
In sum, the description matches a longitudinal design because it involves following the same cohort of children over multiple years to observe changes and developments in health variables and risk factors.

Dina is leading a study of a group of children whose health variables and risk factors will be tracked from kindergarten through high school. Which type of design study is Dina using?单项选择题

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