- webuse abdata
- xtabond n L(0/1).ys yr1980-yr1984,lag(2) twostep pre(w,lag(1,2)) pre(k,lag(2, .))
- est store xtabond
- xtabond2 n L.n L2.n L(0/1).w L(0/2).k L(0/1).ys yr1980-yr1984, gmm(n,lag(2 .)) gmm(w,lag(2 3)) gmm(k,lag(3 .)) iv(ys L.ys yr1980-yr1984) noleveleq twostep
- est store xtabond2
- est table xtabond xtabond2