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Longini Koopman model: In epidemiology the model for primary and secondary infection, based on the classification of the extra-binomial variation in an infection rate which might arise due to 'clustering' of the infected individual within the households. The assumptions underlying the model are given as follows:
* a person might become infected at most once during the course of epidemic;
* all persons are members of the closed 'community'. Additionally each person belongs to the single 'household'. A household might comprise of one or several individuals;
* the sources of infection from community are distributed homogeneously through- out the community. Household members merge at random within the household;
* each person could be infected either from within household or from the community of it.
The probability that the person is infected from community is not dependent on the number of infected members in his or her household;
The probability that exactly the k additional individuals will become infected for the household with s initial susceptible and j is the initial infections is where B is probability that the susceptible individual is not infected from community during the course of the infection, and Q is the probability that the susceptible person escape infection from the single infected household member.
Greenhouse geissercorrection is the method of adjusting the degrees of freedom of the within- subject F-tests in the analysis of the variance of longitudinal data so as to allow t
A rule for computing the number of classes to use while constructing a histogram and can be given by here n is the sample size and ^ γ is the estimate of kurtosis.
Multi dimensional unfolding is the form of multidimensional scaling applicable to both the rectangular proximity matrices where the rows and columns refer to the different sets of
Play-the-winner rule is a process sometimes considered in the clinical trials in which the response to treatment is positive (a success) or negative (a failure). One of two treatm
Omitted covariates is a term generally found in the connection with regression modelling, where the model has been incompletely specified by not including significant covariates.
Bubble plot : A method or technique for displaying the observations which involve three variable values. Two of the variables are used to make a scatter diagram and values of the t
Battery reduction : A common term for reducing the number of variables of the interest in a study for the purposes of study and perhaps later data collection. For instance, an over
Population averaged models are the models for kind of clustered data in which the marginal expectation of response variable is the main focus of interest. An alternative approach
Cohort component method : A broadly used method or technique of forecasting the age- and sex-speci?c population to the upcoming years, in which the initial population is strati?ed
Indirect least squares: An estimation technique used in the fitting of structural equation models. Commonly least squares are first used to estimate reduced form parameters. Usi
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