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Related to red cell indices: packed cell volume, Mean corpuscular hemoglobin

Index

Statistical composite that measures changes in the economy or in financial markets, often expressed in percentage changes from a base year or from the previous month. Indexes measure the ups and downs of stock, bond, and some commodities markets, in terms of market prices and weighting of companies in the index.

Index

A statistical measure of the value of a certain portfolio of securities. The portfolio may be for a certain class of security, a certain industry, or may include the most important securities in a given market, among other options. The value of an index increases when the aggregate value of the underlying securities increases, and decreases when the aggregate value decreases. An index may track stocks, bonds, mutual funds, and any other security or investment vehicle, including other indices. An index's value may be weighted; for example, securities with higher prices or greater market capitalization may affect the index's value more than others. One of the most prominent examples of an index is the Dow Jones Industrial Average, which is weighted for price and tracks 30 stocks important in American markets.

index

The relative value of a variable in comparison with itself on a different date. Many security price indicators such as the Standard & Poor's series and the New York Stock Exchange series are constructed as indexes. Also called stock index. See also base period.

index

To adjust a variable by a selected measure of relative value. For example, it has been proposed that an investor's basis on a security be indexed for changes in consumer prices so that only real increases in value will be taxed. Also called tax indexing. See also subindex.

Index.

An index reports changes up or down, usually expressed as points and as a percentage, in a specific financial market, in a number of related markets, or in an economy as a whole.

Each index -- and there are a large number of them -- measures the market or economy it tracks from a specific starting point. That point might be as recent as the previous day or many years in the past.

For those reasons, indexes are often used as performance benchmarks against which to measure the return of investments that resemble those tracked by the index.

A market index may be calculated arithmetically or geometrically. That's one reason two indexes tracking similar markets may report different results. Further, some indexes are weighted and others are not.

Weighting means giving more significance to some elements in the index than to others. For example, a market capitalization weighted index is more influenced by price changes in the stock of its largest companies than by price changes in the stock of its smaller companies.

index

(1) A statistical indicator that measures changes in the economy in general or in particular areas.An example is the cost-of-living index.(2) A reference point against which measurements are taken for purposes of making future adjustments.An adjustable-rate mortgage might begin with an interest rate of 6 percent and provide that it will increase or decrease in a like percentage as the increase or decrease between today's quoted price for 10-year U.S.Treasury bonds and the price on the loan's annual anniversary date.We would say that 10-year T-bonds are the index.

Some leading loan indices include

• Wall Street Journal prime
• Federal discount rate
• Fed funds rate
• 11th District Cost of Funds
• 10-year Treasuries
• One-year LIBOR

References in periodicals archive ?
Determination of frequency of thalassemia trait in a rural tertiary care hospital of India by using various red cell indices as screening tool.
In addition, of the anaemic patients with either hypochromia and/or microcytosis (46/238), a higher proportion were transfused compared to anaemic patients with normal red cell indices (93.
Red cell indices in megaloblastosis and iron deficiency.
hemoglobin, red cell indices, creatinine concentration) than in those analytes that do not (e.
Representing the relation between the anemia and the red cell indices, by taking the average of the red cell indices from different anemia.
Red cell indices in the Vitamin B12 deficient patients were: MCV = 99 +- 16 fl; MCH = 31 +- 5 pg;
Forty one children diagnosed with iron deficiency anemia on the basis of hemoglobin, red cell count, red cell indices including MCV, MCH, MCHC and RDW, red cell morphology and serum iron levels were included.
We did not report the instrument hematocrit or any of the red cell indices but reported the spun hematocrit instead.
The proprietary analyzers and reagents, to be distributed in North America under the Clinical Data brand name, are fully-automated devices used to count red blood cells, white blood cells, platelets, measure hemoglobin and calculate or measure several red cell indices, including erythrocyte mean corpuscular volume, mean corpuscular hemoglobin, and the mean corpuscular hemoglobin concentration.
A complete blood counting including HB%, PCV, Red cell indices, platelet count, Red cell distribution width and total white cell count and differential was done by Automated blood cell counter analyzer of all the patient on antiretroviral therapy.
It is also important to note that haemoglobin (Hb) levels may remain relatively normal in spite of reduced iron stores, although changes in the red cell indices may be helpful in suggesting iron deficiency.
Reticulocyte count, nucleated RBC's, red cell indices and RDW values further guided to differentiate various types of anemia and higher confirmatory tests were carried out for the specific diagnosis.