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BMJ, 2009
A 50 year old man presents with a sore throat. You suspect streptococcal pharyngitis and request a rapid streptococcal antigen test. The sensitivity of this test is 80% and the specificity is 95%. The prevalence of streptococcal pharyngitis in adults with pharyngitis is 10%. What is the likelihood that the patient has streptococcal pharyngitis if the
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A 50 year old man presents with a sore throat. You suspect streptococcal pharyngitis and request a rapid streptococcal antigen test. The sensitivity of this test is 80% and the specificity is 95%. The prevalence of streptococcal pharyngitis in adults with pharyngitis is 10%. What is the likelihood that the patient has streptococcal pharyngitis if the
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The First Positive: Computing Positive Predictive Value at the Extremes
Annals of Internal Medicine, 2000Computing the positive predictive value (PPV) of a wellknown test for a relatively common disease is a straight-forward exercise. However, in the case of a new test for a rare disorder; the extreme numbers involved-the very low prevalence of the disorder and the lack of previous false-positive results--make it difficult to compute the PPV.
J E, Smith, R L, Winkler, D G, Fryback
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The positive predictive value of photoscreening devices for amblyogenic conditions
Journal of American Association for Pediatric Ophthalmology and Strabismus, 2021To determine the positive predictive value (PPV) of four photoscreening devices in detecting amblyogenic risk factors (ARFs).This is a retrospective cohort study of 1,200 failed vision screenings (FVS) referred to a pediatric eye care practice from general pediatric practices over a 5-year period.
Haley, D'Souza +4 more
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The Journal of Clinical Psychiatry, 2022
Background: Recent studies have used self-administered screening scales in community and clinical samples to identify individuals who probably or likely had the disorder of interest. A better understanding of the statistics of screening, specifically positive predictive value, would indicate that the conclusions drawn from these studies are not ...
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Background: Recent studies have used self-administered screening scales in community and clinical samples to identify individuals who probably or likely had the disorder of interest. A better understanding of the statistics of screening, specifically positive predictive value, would indicate that the conclusions drawn from these studies are not ...
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Re: Predictive value of a positive test.
JAMA, 1986To the Editor.— We wish to comment on the survey of Drs Billings and Bernstein1concerning physician appreciation of the limitations of laboratory testing in the process of clinical decision making. The authors reapplied with a slight modification the question used by Casscells et al.2 In 1978, we wrote3in response to the article of Casscells et al ...
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The Predictive Value of Neutral Positions in Opinion and Attitude Research
The Journal of Psychology, 1968(1968). The Predictive Value of Neutral Positions in Opinion and Attitude Research. The Journal of Psychology: Vol. 69, No. 2, pp. 145-154.
B, Caffrey, W C, Capel
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Negative and positive predictive values of nerve monitoring in thyroidectomy
Head & Neck, 2011AbstractBackgroundRecurrent nerve injury is 1 of the most important complications of thyroidectomy. During the last decade, nerve monitoring has gained increasing acceptance in several centers as a method to predict and to document nerve function at the end of the operation. We evaluated the efficacy of a nerve monitoring system in a series of patients
Claudio R, Cernea +6 more
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