Examlex
Facebook's search engine, introduced in July 2013, is called ________.
Preexisting Differences
Variations in characteristics, conditions, or experiences among subjects before the onset of a study or intervention, potentially influencing outcomes.
Control Group
A group in an experiment or study that does not receive the experimental treatment and is used as a benchmark to measure how the other tested groups perform.
Clinically Significant
Describing a result, finding, or change that is large enough to matter clinically, indicating meaningful implications for a patient's diagnosis, treatment, or prognosis.
Anxiety Disorder
Anxiety Disorder is a mental health condition characterized by excessive fear or worry that affects one's daily activities.
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