Jacinda is analyzing some data that was collected by other researchers a few years ago. When she acquired the data, she was uncertain how postpartum depression was measured, so she asked the prior researchers, but they did not get back to her. To what extent should Jacinda be worried about this?

She should be somewhat worried as uncertainty in measurement choices could flaw the results of the current study.

Jacinda should be worried to the point that she should call for secondary data to become obsolete.

Jacinda should only be worried if she is seeking grant funding.

She should not be worried much, as this is typically not a big deal.