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PSA was launched in July 1991 by David Hall, owner of the coin grading company Professional Coin Grading Service (PCGS), to serve collectors as a third-party card grader. [1] At the outset, the business faced difficulties owing to a limited demand from collectors who sought card grading services. [ 2 ]
For example, if the most prevalent pattern/grade is 2, and the second most prevalent grade is 1, then the Gleason score is 2+1=3. If the neoplasm has only one pattern, the grade of that pattern is doubled to obtain the score. For example, if a tumor is entirely grade 1, the Gleason score would be 1+1=2.
The Professional Sports Authenticator (PSA) company graded this card a PSA 8 Near Mint-Mint (NM-MT) on their 10-point scale, [31] [32] the highest grade given to a T206 Honus Wagner card. Bill Hughes [33] was the official grader of the card, working for PSA at the time. Hughes admitted to knowing that the card had been altered when he graded it.
A PSA 1 Mantle is expensive, running around $25,000 to $35,000. A PSA 9 Mantle — there are fewer than 10 known in existence — fetched a whopping $5.2 million at auction in January. Condition ...
Prior to that, Soviet Lithuania had a 5-point grading scale. 10 is the highest achievable grade for excellent performance and 1 is the lowest. Usually, 1 is given when there is no work submitted at all (called kuolas in the academic jargon, meaning 'stake'); otherwise, most teachers keep 2 as the lowest grade and rarely mark work as 1.
A more refined prognosis can be established by consideration of prostate-specific antigen, and grade (i.e. Gleason score in the Gleason grading system). For example, it is common to classify patients into high, intermediate and low-risk groups on the basis of these three factors (TNM stage, PSA and Gleason score).
What Your PSA Test Results Mean. THE PSA IS a good initial “check engine light” for the prostate, says Garrett Pohlman, M.D., a urologist and host of The Prostate Health Podcast. But it can ...
A rating scale is a set of categories designed to obtain information about a quantitative or a qualitative attribute. In the social sciences, particularly psychology, common examples are the Likert response scale and 0-10 rating scales, where a person selects the number that reflecting the perceived quality of a product.