Differences-in-differences estimator, Advanced Statistics

The estimator of the group by the time period interaction in a study in which the subjects in two different groups are observed in two different time periods.

Normally one of the groups is the control group and the other group is provided the treatment in the second period but not in the first period. The differences-in-differences estimator of the causal effect of treatment is simply difference in the period means for the second group minus the difference in the period means for the first group. The differences-in-differences estimator is striking because it can be seen as resulting from sweeping out both subject-specific intercepts and the period-specific intercepts from a model comprising such terms. It is the standard approach to the program evaluation in the study of economics.

 

Posted Date: 7/27/2012 3:01:15 AM | Location : United States







Related Discussions:- Differences-in-differences estimator, Assignment Help, Ask Question on Differences-in-differences estimator, Get Answer, Expert's Help, Differences-in-differences estimator Discussions

Write discussion on Differences-in-differences estimator
Your posts are moderated
Related Questions
Knox's tests: These tests designed to detect any tendency for the patients with a particular disease to form the disease cluster in time and space. The tests are relied on a two-b

Hamilton County judges try thousands of cases per year. In an overwhelming majority of the cases disposed, the verdict stands as rendered. However, some cases are appeale

Standardise the following arguments, which involve counter-arguments Some educators have argued that the increasing use of the internet by children and teenagers will have a be

The phrase first spoken by one of the witches in Macbeth. Now this is used to describe the exponential rise in the number of possible locations in the multivariate space as dimensi

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

Buffon's needle problem : A problem proposed and solved by the scientist Comte de Buffon in 1777 which includes determining the probability, p, which a needle of length l will inte

hello I have a dataset including both categorical & numerical variable for market segmentation.how can i cluster them via k-means in matlab? thank you

Component bar chart : A bar chart which shows the component parts of the aggregate represented by the whole length of the bar. The component parts are shown as the sectors of bar w

Probability distribution : For the discrete random variable, a mathematical formula which provides the probability of each value of variable. See, for instance, binomial distributi

It is used generally for the matrix which specifies a statistical model for a set of observations. For instance, in a one-way design with the three observations in one group, tw