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Definition Positive predictive value (PPV) The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.
Pay-per-view (PPV) is a type of pay television or webcast service that enables a viewer to pay to watch individual events via private telecast. Events can be purchased through a multichannel television platform using their electronic program guide , an automated telephone system, or through a live customer service representative .
The company's PPV lineup expanded to a monthly basis in the mid-1990s following the introduction of the In Your House series of pay-per views before expanding even further in the mid-2000s during the first WWE brand extension. In addition, WWE produced international PPVs not available in the United States between 1997 and 2003.
Precision and recall. Precision and recall. In pattern recognition, information retrieval, object detection and classification (machine learning), precision and recall are performance metrics that apply to data retrieved from a collection, corpus or sample space . Precision (also called positive predictive value) is the fraction of relevant ...
The Positive predictive value (PPV) of a test is the proportion of persons who are actually positive out of all those testing positive, and can be calculated from a sample as: PPV = True positive / Tested positive. If sensitivity, specificity, and prevalence are known, PPV can be calculated using Bayes theorem.
Sensitivity (true positive rate) is the probability of a positive test result, conditioned on the individual truly being positive. Specificity (true negative rate) is the probability of a negative test result, conditioned on the individual truly being negative. If the true status of the condition cannot be known, sensitivity and specificity can ...
Pneumococcal polysaccharide vaccine, sold under the brand name Pneumovax 23, is a pneumococcal vaccine that is used for the prevention of pneumococcal disease caused by the 23 serotypes of Streptococcus pneumoniae contained in the vaccine as capsular polysaccharides. [2] It is given by intramuscular or subcutaneous injection.
This is a list of events held by the American professional wrestling promotion Total Nonstop Action Wrestling (TNA) on pay-per-view (PPV) and on streaming services. [1] From its inception, TNA's main output was a two-hour weekly program broadcast exclusively on pay-per-view. Their first event was held on June 19, 2002, in Huntsville, Alabama ...