SUMMARY Timely vaccinations of children in developing countries are important for reducing morbidity and mortality, which are Millennium Development Goals. However, a majority of children do not possess vaccination cards compiling information on timing. We investigated the benefits of...

This paper provides sufficient conditions for the identification of both static and dynamic models containing endogenous regressors from panel data by utilizing the restrictions across time periods on the parameters. It is shown that identification is achieved under quite weak conditions even in...

This brief article outlines some difficulties as well as benefits in conducting randomized controlled trials in social science settings especially in developing countries. Some of the historical developments are summarized and certain applications in health sciences are discussed from...

This paper considers inference procedures in a system of linear simultaneous equations with errors generated by a vector autoregressive process in situations where the null hypotheses involve the elements of the dispersion matrix of the errors. The problem is approached through the reduced form...