CFD1 is a binary confounder (1,0; yes/no), CFD2 is a categorical confounder (0,1,2; none/mild/moderate), _PS_ is the propensity score and PS_Weight is the stabilized PS generated from IPTW using SAS Proc psmatch and requesting WEIGHT=ATEWGT(STABILIZE=YES) in the assess statement.
In the SAS psmatch documentation, I can't find how to address extreme PS values that have been weighted - I have read that you can trim or truncate such values, but I don't know how to request this; or what method I should use to address this?
Any help would be really appreciated, please let me know if anything above is unclear etc.
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