机译:Testing the hypothesis of absence of unobserved confounding in semiparametric bivariate probit models
Department of Statistical Science, University College London, Gower Street, London WC1E 6BT, UK;
Department of Economics, Mathematics and Statistics, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK;
Dipartimento di Scienze Statistiche, Universita' di Bologna, via Belle Arti 41, 40126 Bologna, Italy;
Endogeneity; Lagrange multiplier test; Non-random sample selection; Penalized regression spline; Wald test;