Читать книгу Medical Statistics - David Machin - Страница 108

Diagnostics tests use patient data to classify individuals as either normal or abnormal. A related statistical problem is the description of the variability in normal individuals, to provide a basis for assessing the test results of other individuals. The most common form of presenting such data is as a range of values or interval that contains the values obtained from the majority of a sample of normal subjects. The reference interval is often referred to as a normal range or reference range. To distinguish the use of the same word for the Normal distribution we have used a lower case, for the normal range, and upper case convention throughout this book.