hello,
�I�am�a�PHD�student�and�i�use�stata�in�my�thesis.
I
�know�that�Heckman�1979�correct�for�sample�selection�biais�and�in�stata�we�use�heckman�technique.
My�question�is�if�there�is�another�way�more�recent�used�by�stata�to�correct�for�sample�selection�bais?
�our�response�is�very�important �for�the�advnace�of�my�thesis
�have�a�good�day
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