Key points are not available for this paper at this time.
In this companion article to "Dynamic Regime Marginal Structural Mean Models for Estimation of Optimal Dynamic Treatment Regimes, Part I: Main Content" Orellana, Rotnitzky and Robins (2010), IJB, Vol. 6, Iss. 2, Art. 7 we present (i) proofs of the claims in that paper, (ii) a proposal for the computation of a confidence set for the optimal index when this lies in a finite set, and (iii) an example to aid the interpretation of the positivity assumption.
Orellana et al. (Wed,) studied this question.