Case-control study, Advanced Statistics

Case-control study: The traditional case-control study is the common research design in the epidemiology where the exposures to risk factors for cases (individuals getting the disease) are compared to the exposures for controls (individuals not getting affected by the disease). The design is retrospective in the sense which a sample of controls is sampled from the subjects who are disease free at the end of the observation time period. The primary benefit of this design is that exposure information is required to be gathered for only a small proportion of the cohort members, thereby considerably reducing data collection costs. The major disadvantage is the potential for recall bias.

 

 

Posted Date: 7/26/2012 6:02:31 AM | Location : United States







Related Discussions:- Case-control study, Assignment Help, Ask Question on Case-control study, Get Answer, Expert's Help, Case-control study Discussions

Write discussion on Case-control study
Your posts are moderated
Related Questions
R-squared is regarded as the coefficient of determination and is used to give the proportion of the fluctuation of the variance of one variable to another variable. R-squared also

Barnard, George Alfred (1915^2002) : Born in Walthamstow in the east of London, Barnard achieved a scholarship to St. John's College, Cambridge, from where he graduated in the math

The nonparametric Bayesian inference approach to using the finite mixture distributions for modelling data suspected of the containing distinct groups of observations; this approac

The interplay of the genes and environment on, for instance, the risk of disease. The term represents the step away from the argument as to whether the nature or nurture is the pre

(a) A plane timetable states that a particular plane is due at 2pm but the actual arrival time isuniformly distributed between 1pm and 3pm. (i) Calculate the probability that th

The Null Hypothesis - H0:  There is autocorrelation The Alternative Hypothesis - H1: There is no autocorrelation Rejection Criteria: Reject H0 (n-s)R 2 > = (1515 - 4) x (0.

Relative poverty statistics is the statistics on the properties of populations falling below given fractions of average income which play a central role in debate of poverty. The

How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians

The problematic and enigmatic theory of an inference introduced by the Fisher, which extracts a probability distribution for the parameter on the basis of the data without having f

Naor's distribution is the discrete probability distribution which arises from the following model; Assume an urn contains n balls of which one is red and the remainder is whit