Hi. I have about 60,000 records for children in 12 states.  Some children have multiple records.  Some of just one record. I have a binary dependent variable.  I am trying to estimate a model that takes into account the fact that the records for the same child are correlated and that children are nested within states.  I know how to estimate models with GEE to deal with the correlation but am not sure how to deal with the nesting.  The data look like this.   State Child X Y 1 1 1 1 1 1 0 1 1 2 1 1 1 2 1 0 1 2 0 0 1 2 0 0 2 3 0 1 2 3 0 1 2 3 1 1 2 3 0 0 2 3 0 1 2 4 1 0 2 4 0 1 2 4 1 0 3 5 1 0 3 6 0 0 3 7 0 0 3 7 0 1 3 7 1 1 3 7 1 0 ... View more