In data collection methods, primary data are typically collected how?

• A. Retrospectively
• B. Continuously
• C. Prospectively
• D. Randomly

Answer: (C)

Primary data are gathered directly by the researcher for a specific study, and doing this in a forward-looking way helps ensure that how data are collected is planned, standardized, and aligned with the study timeline. Collecting data prospectively means you define what you will measure, recruit or enroll participants, and then capture information as events occur over time. This approach provides clear temporal sequencing, reduces bias from incomplete or inconsistent historical records, and allows better control over measurement methods and timing.

Retrospective data collection relies on information from the past, such as old records or participants recalling past events. While useful in some designs, it often introduces biases, gaps, and less control over how data were collected, making it less ideal as the standard method for primary data collection. The term continuously describes how often data are gathered, not the direction in time, and random sampling relates to who or what is included rather than when data are collected.

So, primary data are typically collected prospectively because this forward-thinking, planned approach ensures higher data quality and proper temporal relationships for the study.