Longitudinal data are
A)standard or identical data collected at periodic intervals from the same study objects each time period
B)standard or identical data collected at periodic intervals from different study objects each time period
C)nonstandard or different data collected at periodic intervals from the same study objects each time period
D)nonstandard or different data collected at periodic intervals from different study objects each time period

Question

Quizplus · Accepted Answer

Longitudinal data are repeatedly collected measurements from the same study objects, allowing for the analysis of change over time. Therefore, the correct option is A, which describes standard or identical data collected at periodic intervals from the same study objects each time period.

Longitudinal Data Are