是否可以在匹配期间使用%CEM宏为SAS指定要忽略的变量向量(可从以下网址获取:https://gking.harvard.edu/cem)?
例如,考虑一个名为“Test”的数据集……
最新版本的%CEM允许指定在匹配过程中使用的变量向量,即:
%CEM ( lib = work, dataset = Test, id = Person_id, treat = Treatment, keep = X1 X2, del_miss = 0, method = Sturges, path_graph = C:\path_graph, report = on );