Prevented fraction, Advanced Statistics

Prevented fraction is a measure which can be used to attribute the protection against the disease directly to an intervention. The measure can given by the proportion of disease which would have occurred had the intervention not been present in population  which can be given as follows

1336_prevented fraction.png 

here PAI is the risk of the disease in absence of the intervention in the population and PI is the overall risk in the presence of the intervention.

Posted Date: 7/31/2012 3:07:54 AM | Location : United States







Related Discussions:- Prevented fraction, Assignment Help, Ask Question on Prevented fraction, Get Answer, Expert's Help, Prevented fraction Discussions

Write discussion on Prevented fraction
Your posts are moderated
Related Questions
elements , importance, limitation, and theories

Ordered alternative hypothesis is a hypothesis or assumption which speci?es an order for the set of parameters of interest as an alternative to the equality, rather than simply th

O'Brien's two-sample tests are the extensions of the conventional tests for assessing the differences between treatment groups which take account of the possible heterogeneous nat

Barrett and Marshall Model for conception : A biologically reasonable model for the probability of conception in a particular menstrual cycle, which supposes that the batches of sp

Formal graphical representation of the "causal diagrams" or the "path diagrams" where the  relationships are directed but acyclic (that is no feedback relations allowed). Plays an


Mention the characteristics of Statistics. Explain any two applications of Statistics.

stationary time series

The values assigned to factors for the individual sample units in a factor analysis. The most common approach is "regression method". When the factors are seen as the random variab

The graphical method for studying the behavior of the seasonal time series. In such a plot, the January values of seasonal component are graphed for the upcoming years, then the