2014 62 1 45–58 c �2014 † 2013 7 22 10 15 10 17 Pearl 1999 3 SITA 1. 1.1 Potential response approach, Potential outcome approach Pearl, 2009 , 2009 ; Rubin, 2006 “ ” Potential response model, Potential outcome model “Counterfactual” “Potential Outcome” “Potential Response” Albert and Nelson, 2011; Cai et al., 2007, 2008; Kuroki, 2013; Kuroki and Cai, 2008; VanderWeele et al., 2011; VanderWeele and