Final answer:
The statement "I ate half my lunch" is an example of objective data because it describes a measurable action that can be verified by others, unlike statements based on personal feelings.
Step-by-step explanation:
The example of objective data in the patient's statement is "I ate half my lunch." Objective data is information that can be measured or observed by someone other than the patient. In health care, objective data is vital as it can be independently verified through observation, measurement, or testing. The remaining statements provided by the patient are subjective as they are based on the patient's personal experiences and feelings, such as hunger, warmth, and the urge to urinate, which cannot be objectively measured but are communicated by the patient.
Examples of objective data include vital signs like body temperature, heart rate, breathing rate, and blood pressure. These indicators can alert a clinician to the presence of a disease as they are measurable components of a physical exam. For instance, recording a fever is an objective finding because the body temperature can be accurately measured using a thermometer.