Which statement best defines subjective data?

Subjective data refers to information that is based on personal opinions, interpretations, feelings, and experiences of an individual, particularly a patient's perspective regarding their health and well-being. Personal accounts relayed by the patient encompass a wide range of factors, such as symptoms, pain levels, emotional states, and personal experiences related to their condition. This type of data is inherently subjective since it varies from person to person and is influenced by individual perceptions.

In clinical practice, gathering subjective data through patient interviews is crucial, as it provides healthcare professionals with insights into the patient's experience, which may not be evident through objective measures alone. Understanding a patient's subjective reports can significantly influence diagnosis and treatment planning.

In contrast, the other options pertain to objective data. Data that can be observed directly involves observable facts and measurable outcomes that do not rely on personal interpretation. Information derived solely from diagnostic tests represents clinical findings that are not based on patient perception. Medical history documented by professional staff reflects recorded objective and subjective information, but it itself does not represent subjective data unless it includes the patient’s verbal accounts of their experiences.