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Baseline definition in your study
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Answer Posted / rg
Baseline is the target population on which analysis to be carried out. For example: Analysis to be done on Male heart patient of age 55 to 60(both inclusive) who are non smoker, then your filter condition to create baseline population are
Patient type = 'Heart Patient'
Gender = 'M'
Age between 55 and 60
Smoker = 'N'
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data data1; input dt account; format dt date9.; cards; 1745 1230 1756 1120 1788 1130 1767 1240 ; data data2; input startdt enddt total; format startdt date9. enddt date9.; cards; 1657 1834 12300 1557 1758 16800 1789 1789 12300 1788 1345 12383 1899 1899 13250 ; proc sql; create table data3 as select * from data1 as x left join data2 as y on x.dt>=y.startdt and x.dt<=y.enddt; quit; Here, we are getting cartision product. But,I want left join report consisting of this program. It should not get duplicate values. you can modify the program also.
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