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Definition
 
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Odds Ratio definition: The ratio of two odds. The exposure-odds ratio for case control data is the ratio of the odds in favor of exposure among cases to the odds in favor of exposure among noncases. The disease-odds ratio for a cohort or cross section is the ratio of the odds in favor of disease among the exposed to the odds in favor of disease among the unexposed. The prevalence-odds ratio refers to an odds ratio derived cross-sectionally from studies of prevalent cases.
Odds Ratio definition: The ratio of the odds of an event occurring in one group to the odds of it occurring in another group, or to a sample-based estimate of that ratio.
Sex Ratio definition: The number of males per 100 females.
Ventilation-Perfusion Ratio definition: The ratio of alveolar ventilation to simultaneous alveolar capillary blood flow in any part of the lung. (Stedman, 25th ed)
CD4-CD8 Ratio definition: Ratio of T-LYMPHOCYTES that express the CD4 ANTIGEN to those that express the CD8 ANTIGEN. This value is commonly assessed in the diagnosis and staging of diseases affecting the IMMUNE SYSTEM including HIV INFECTIONS.
Waist-Hip Ratio definition: The waist circumference measurement divided by the hip circumference measurement. For both men and women, a waist-to-hip ratio (WHR) of 1.0 or higher is considered "at risk" for undesirable health consequences, such as heart disease and ailments associated with OVERWEIGHT. A healthy WHR is 0.90 or less for men, and 0.80 or less for women. (National Center for Chronic Disease Prevention and Health Promotion, 2004)
Waist-Hip Ratio definition: The ratio of the abdominal circumference at the navel to maximum hip and buttocks circumference; looks at the proportion of fat stored on the body around the waist and hip. Carrying extra weight around the waist is a greater health risk than carrying extra weight around the hips or thighs.
International Normalized Ratio definition: System established by the World Health Organization and the International Committee on Thrombosis and Hemostasis for monitoring and reporting blood coagulation tests. Under this system, results are standardized using the International Sensitivity Index for the particular test reagent/instrument combination used.
International Normalized Ratio of Prothrombin Time definition: A measure of the extrinsic pathway of coagulation. The International Normalized Ratio of Prothrombin Time (INR) is the ratio of a patient prothrombin time to a normal (control) sample raised to the power of the International Sensitivity Index (ISI) with a range of 0.8 to 1.2 seconds.
Prothrombin Intl. Normalized Ratio definition: A ratio that represents the prothrombin time for a plasma specimen, divided by the result for a control plasma specimen, further standardized for the International Sensitivity Index of the tissue factor (thromboplastin) used in the test.
1 further definition >>
Publications
 

Measuring additive interaction using odds ratios

Linda Kalilani et al.

Epidemiologic Perspectives & Innovations , 18 Apr 2006

Distorted Sex Ratios: A Window into RNAi-Mediated Silencing

Patrick M Ferree et al.

PLoS Biology , 01 Nov 2007

The use of digit ratios as markers for perinatal androgen action

Matthew H McIntyre

Reproductive Biology and Endocrinology , 26 Feb 2006

Ratios of involved nodes in early breast cancer

Vincent Vinh-Hung et al.

Breast Cancer Research , 2004

A comparison of two methods for estimating prevalence ratios

Martin R Petersen et al.

BMC Medical Research Methodology , 28 Feb 2008

Reliability of gene expression ratios for cDNA microarrays in multiconditional experiments with a reference design

Rainer König et al.

Nucleic Acids Research , 2004

Stable Isotope Ratios in Hair and Teeth Reflect Biologic Rhythms

Otto Appenzeller et al.

PLoS ONE , 25 Jul 2007

Reproducibility Assessment of Independent Component Analysis of Expression Ratios From DNA Microarrays

David Philip Kreil et al.

Comparative and Functional Genomics , 01 Jun 2003

Inorganic speciation of dissolved elements in seawater: the influence of pH on concentration ratios

Robert H Byrne

Geochemical Transactions , 22 Jan 2002

Evaluation of reference-based two-color methods for measurement of gene expression ratios using spotted cDNA microarrays

Bernardo R Peixoto et al.

BMC Genomics , 24 Feb 2006

1616 further publications >>