Evaluate extra piece of the influence function for the IPTW
eval_Diptw_g(A, DeltaA, DeltaY, Qrn, gn, a_0)A vector of binary treatment assignment (assumed to be equal to 0 or 1)
Indicator of missing treatment (assumed to be equal to 0 if missing 1 if observed)
Indicator of missing outcome (assumed to be equal to 0 if missing 1 if observed)
List of estimated reduced-dimension outcome regression evaluated at observations
List of estimated propensity scores evaluated at observations
Vector of values to return marginal mean