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Case-Control Studies
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D016022 |
[Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time.
] |
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Epidemiologic Study Characteristics
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D016020 |
[Works about types and formulations of studies used in epidemiological research.
] |
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Home Care Services
|
D006699 |
[Community health and NURSING SERVICES providing coordinated multiple services to the patient at the patient's homes. These home-care services are provided by a visiting nurse, home health agencies, HOSPITALS, or organized community groups using professional staff for care delivery. It differs from HOME NURSING which is provided by non-professionals.
, Care of a patient at home, by family members and/or health personnel. (Bioethics Thesaurus)
] |
|
Holmium
|
D006695 |
[An element of the rare earth family of metals. It has the atomic symbol Ho, atomic number 67, and atomic weight 164.93.
] |
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Holography
|
D006696 |
[The recording of images in three-dimensional form on a photographic film by exposing it to a laser beam reflected from the object under study.
] |
|
Holothurin
|
D006697 |
[A highly toxic saponin occurring in HOLOTHUROIDEA. This marine toxin is an anionic surfactant, hemolyzing ERYTHROCYTES.
] |
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Dextrorphan
|
D03.132.577.249.235 |
|
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Holtzman Inkblot Test
|
D006698 |
[Personality evaluation based on the scoring of several variables as a result of the subject's responses in perceiving 47 inkblot plates.
] |
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HIV Wasting Syndrome
|
C01.221.812.640.400.520 |
|
|
Linear Models
|
D016014 |
[Statistical models in which the value of a parameter for a given value of a factor is assumed to be equal to a + bx, where a and b are constants. The models predict a linear regression.
] |
|
Logistic Models
|
D016015 |
[Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.
] |
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Poisson Distribution
|
D016012 |
[A distribution function used to describe the occurrence of rare events or to describe the sampling distribution of isolated counts in a continuum of time or space.
] |
|
HLA-C Antigens
|
D12.776.543.550.439.600 |
|
|
Likelihood Functions
|
D016013 |
[Functions constructed from a statistical model and a set of observed data which give the probability of that data for various values of the unknown model parameters. Those parameter values that maximize the probability are the maximum likelihood estimates of the parameters.
] |
|
Least-Squares Analysis
|
D016018 |
[A principle of estimation in which the estimates of a set of parameters in a statistical model are those quantities minimizing the sum of squared differences between the observed values of a dependent variable and the values predicted by the model.
, A least squares analysis that minimizes the differences between the calculated and measured values by adjusting the parameters needed to describe the model. It is used for POWDER DIFFRACTION crystallography.
] |
|
Interferon-Stimulated Gene Factor 3, gamma Subunit
|
D12.776.157.057.061.750 |
|
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Survival Analysis
|
D016019 |
[A class of statistical procedures for estimating the survival function (function of time, starting with a population 100% well at a given time and providing the percentage of the population still well at later times). The survival analysis is then used for making inferences about the effects of treatments, prognostic factors, exposures, and other covariates on the function.
] |
|
Proportional Hazards Models
|
D016016 |
[Statistical models used in survival analysis that assert that the effect of the study factors on the hazard rate in the study population is multiplicative and does not change over time.
] |
|
Odds Ratio
|
D016017 |
[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.
] |
|
Pigment Epithelium of Eye
|
A09.371.670 |
|
