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The 4Kscore combines total, free and intact PSA together with human kallikrein 2. [46] It is used to try to determine the risk of a Gleason score greater than 6. [46] The Prostate Health Index (PHI) is a PSA-based blood test for early prostate cancer screening. It may be used to determine when a biopsy is needed.
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Earlier this year, OPKO executed a sublicensing deal with IHT to commercialize OPKO's novel panel of kallikrein biomarkers and associated algorithm (4Kscore™) for the early detection of prostate ...
If the correlation between separate administrations of the test is high (e.g. 0.7 or higher as in this Cronbach's alpha-internal consistency-table [6]), then it has good test–retest reliability. The repeatability coefficient is a precision measure which represents the value below which the absolute difference between two repeated test results ...
Andrew Julian Vickers (born 11 February 1967) [1] [2] is a biostatistician and attending research methodologist at Memorial Sloan Kettering Cancer Center. Since 2013, he has also been professor of public health at Weill Cornell Medical College. [3] He is the statistical editor for the peer-reviewed journal European Urology. [4]
In statistics, intra-rater reliability is the degree of agreement among repeated administrations of a diagnostic test performed by a single rater. [ 1 ] [ 2 ] Intra-rater reliability and inter-rater reliability are aspects of test validity .
The name of this formula stems from the fact that is the twentieth formula discussed in Kuder and Richardson's seminal paper on test reliability. [1] It is a special case of Cronbach's α, computed for dichotomous scores. [2] [3] It is often claimed that a high KR-20 coefficient (e.g., > 0.90) indicates a homogeneous test. However, like ...
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