Most of the studies had little information about the precancer mental histories of the patients, for example, and they used variable methods to screen for depression and anxiety.
The new technique is based on multivariate latent variable methods (LVM) coupled with optimization techniques.
Complex variable methods for shape sensitivity analysis have some potential advantages over other methods.
This chapter investigates complex variable methods' application to problems of engineering interest.
We go on to use instrumental variable methods to take account of the endogeneity of both parental income and education.
The observed variable methods assume that all sources of potential confounds are measured and included in the analysis.
Employing complex variable methods enables many problems to be solved that would be intractable by other schemes.
The design sensitivity formulation of an energy finite element method is presented using the direct differentiation and adjoint variable methods.
The papers cited above typically rely on selection correction techniques à la Borjas (1987 , 1991 and the related instrumental variable methods.
Instrumental variable methods provide a standard answer to measurement error in a regressor when instruments of sufficient quality and relevance can be found.
Many of the studies in Table 2 are aware of this problem and have tried to control for endogeneity using various instrumental variable methods.
