treatment obs1 obs2 obs3 obs4 obs5 e0 88.6 73.2 91.4 68.0 75.2 e1 63.0 53.9 69.2 50.1 71.5 e2 44.9 59.5 40.2 56.3 38.7 e4 31.0 39.6 45.3 25.2 22.7