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Observation
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D019370 |
[The act of regarding attentively and studying facts and occurrences, gathering data through analyzing, measuring, and drawing conclusions, with the purpose of applying the observed information to theoretical assumptions. Observation as a scientific method in the acquisition of knowledge began in classical antiquity; in modern science and medicine its greatest application is facilitated by modern technology. Observation is one of the components of the research process.
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Observational Studies as Topic
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D064887 |
[Works about clinical studies in which participants may receive diagnostic, therapeutic, or other types of interventions, but the investigator does not assign participants to specific interventions (as in an interventional study).
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Observational Studies, Veterinary as Topic
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D000079223 |
[Works about clinical studies in which animal subjects may receive diagnostic, therapeutic, or other types of interventions and where the investigator does not assign subjects to specific interventions.
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Observational Study
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D064888 |
[A work that reports on the results of a clinical study in which participants may receive diagnostic, therapeutic, or other types of interventions, but the investigator does not assign participants to specific interventions (as in an interventional study).
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Observational Study, Veterinary
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D000078323 |
[Reports on studies of the results of a clinical study in which animal subjects may receive diagnostic, therapeutic, or other types of interventions, where the investigator does not assign participants to specific interventions.
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Observer Variation
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D015588 |
[The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
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Obsessive Behavior
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D009770 |
[Persistent, unwanted idea or impulse which is considered normal when it does not markedly interfere with mental processes or emotional adjustment.
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Obsessive-Compulsive Disorder
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D009771 |
[An anxiety disorder characterized by recurrent, persistent obsessions or compulsions. Obsessions are the intrusive ideas, thoughts, or images that are experienced as senseless or repugnant. Compulsions are repetitive and seemingly purposeful behavior which the individual generally recognizes as senseless and from which the individual does not derive pleasure although it may provide a release from tension.
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Obstetric Labor Complications
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D007744 |
[Medical problems associated with OBSTETRIC LABOR, such as BREECH PRESENTATION; PREMATURE OBSTETRIC LABOR; HEMORRHAGE; or others. These complications can affect the well-being of the mother, the FETUS, or both.
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Obstetric Labor, Premature
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D007752 |
[Onset of OBSTETRIC LABOR before term (TERM BIRTH) but usually after the FETUS has become viable. In humans, it occurs sometime during the 29th through 38th week of PREGNANCY. TOCOLYSIS inhibits premature labor and can prevent the BIRTH of premature infants (INFANT, PREMATURE).
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Obstetric Nursing
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D009773 |
[A nursing specialty involving nursing care given to the pregnant patient before, after, or during childbirth.
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Obstetric Surgical Procedures
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D013513 |
[Surgery performed on the pregnant woman for conditions associated with pregnancy, labor, or the puerperium. It does not include surgery of the newborn infant.
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Obstetrical Forceps
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D009772 |
[Surgical instrument designed to extract the newborn by the head from the maternal passages without injury to it or the mother.
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Obstetrics
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D009774 |
[A medical-surgical specialty concerned with management and care of women during pregnancy, parturition, and the puerperium.
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Obstetrics and Gynecology Department, Hospital
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D009775 |
[Hospital department responsible for the administration and management of services provided for obstetric and gynecologic patients.
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Obturator Nerve
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D009776 |
[A nerve originating in the lumbar spinal cord (L2 to L4) and traveling through the lumbar plexus to the lower extremity. The obturator nerve provides motor innervation to the adductor muscles of the thigh and cutaneous sensory innervation of the inner thigh.
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Occipital Bone
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D009777 |
[Part of the back and base of the CRANIUM that encloses the FORAMEN MAGNUM.
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Occipital Lobe
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D009778 |
[Posterior portion of the CEREBRAL HEMISPHERES responsible for processing visual sensory information. It is located posterior to the parieto-occipital sulcus and extends to the preoccipital notch.
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Occludin
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D062793 |
[A MARVEL domain protein that binds to and regulates PROTEIN PHOSPHATASE 1. Occludin plays an important role in the formation and regulation of the TIGHT JUNCTION paracellular permeability barrier.
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Occlusal Adjustment
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D019558 |
[Selective grinding of occlusal surfaces of the teeth in an effort to eliminate premature contacts and occlusal interferences; to establish optimal masticatory effectiveness, stable occlusal relationships, direction of main occlusal forces, and efficient multidirectional patterns, to improve functional relations and to induce physiologic stimulation of the masticatory system; to eliminate occlusal trauma; to eliminate abnormal muscle tension; to aid in the stabilization of orthodontic results; to treat periodontal and temporomandibular joint problems; and in restorative procedures. (From Jablonski, Dictionary of Dentistry, 1992)
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