Which of the following belongs in a line list as essential data elements?

• A. Weather conditions
• B. Hospital budget
• C. Person, place, time, and clinical status
• D. Employee shift schedule

Answer: (C)

A line list is a simple way to track each case in an outbreak by recording key attributes for every individual. The essential data elements are who the case is, where they are, when the illness began or was reported, and what their clinical status is. This combination—person, place, time, and clinical status—lets you count cases, observe patterns over time and across locations, and connect cases to potential exposures.

Weather conditions, hospital budget, and employee shift schedule aren’t details tied to individual cases. Weather is environmental context, while budgets and shift schedules are administrative data. They don’t provide the per-case information needed to analyze an outbreak, so they aren’t part of the essential line-list data.