Macular thickness, as measured by OCT, is one of the key outcome measures used in most clinical trials, especially those on diabetic macular edema and AMD. Because Stratus TD-OCT was the most common commercially available OCT instrument in the past decade, most trials are designed based on Stratus OCT.
A percentile (or a centile) is a measure used in statistics indicating the value below which a given percentage of observations in a group of observations fall. For example, the 20th percentile is the value (or score) below which 20% of the observations may be found. The term percentile and the related term percentile rank are often used in the reporting of scores from norm-referenced tests.
Percent is an abbreviation for the Latin per centum, which means for each 100. 100% , then, means 100 for each 100, which is all. 100% of 12 is 12. 50% is another way of saying half because 50% means 50 for each 100, which is half.50% of 12 is 6. A percent means how many for each 100. Example 1. Below are 100 small squares, and 32 have been shaded.ercent is an abbreviation for the Latin per centum, which means for each 100. 100% , then, means 100 for each 100, which is all. 100% of 12 is 12. 50% is another way of saying half because 50% means 50 for each 100, which is half.