index

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Related to Ankle-brachial index: claudication, endarterectomy

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 ?
The Validity and Reliability between Automated Oscillometric Measurement of Ankle-Brachial Index and Standard Measurement by Eco-Doppler in Diabetic Patients with or without Diabetic Foot.
Chambless et al., "Associations of ankle-brachial index with clinical coronary heart disease, stroke and preclinical carotid and popliteal atherosclerosis: the Atherosclerosis Risk in Communities (ARIC) Study," Atherosclerosis, vol.
[2] Nonstandard abbreviations: PAD, peripheral artery disease; IC, intermittent claudication; CLI, critical limb ischemia; CV, cardiovascular; ABI, ankle-brachial index; CRP, C-reactive protein; hs-CRP, high-sensitivity CRP; SAA, serum amyloid A; IL-6, interleukin-6; VCAM-1, vascular cell adhesion molecule-1; ICAM-1, intercellular adhesion molecule-1; MCP-1, monocyte chemoattractant protein-1; VWF, von Willebrand factor; Lp-PLA2, lipoprotein-associated phospholipid A2;VEGF-A, vascular endothelial growth factor A; GWAS, genome-wide association studies; IPO5, importin-5; HLI, hind-limbs ischemia; IL-21R, interleukin-21 receptor.
Salido, "Ankle-brachial index to detect peripheral arterial disease concordance and validation study between Doppler and an oscillometric device," Medicina Clinica, vol.
P < 0.05 versus (b) normal-weight unhealthy, (c) obese healthy, and (d) obese unhealthy; CHD: coronary heart disease; AA: abdominal aorta; ABI: ankle-brachial index; BIA: bioelectrical impedance analysis; BMI: body mass index; c-IMT max: maximum carotid intima-media thickness; eGFR: estimated glomerular filtration rate; HbA1c: glycated hemoglobin; HDL: high-density lipoproteins; HOMA-IR: homeostasis model assessment of insulin resistance; hs-CRP: high-sensitivity C-reactive protein; LDL: low- density lipoproteins.
If you're at intermediate risk, you may need additional testing, such as a comparison of your blood pressure taken in your ankles and arms (ankle-brachial index) or coronary artery calcium scoring, a CT scan that looks for a buildup of calcium in your coronary arteries.
Ankle brachial index The ankle-brachial index test is a quick, non-invasive way to check your risk of peripheral artery disease, or PAD, where arteries in your legs or arms become narrowed or blocked.
In addition, we measured the ankle-brachial index (ABI), a marker of the presence and severity of peripheral artery disease.
However, few studies focused on the related detective indexes of the vascular stenosis, such as the ankle-brachial index (ABI).
Risk factors for decling Ankle-Brachial Index in men and women 65 years or older.