USUBJID AGE TRT DRUG 1001001 45 active    carbidopa 1001002 56 placebo dummy 1001003 49 placebo dummy 1001004 38 active    Combination 1001005 40 placebo dummy 1001006 46 active    Combination 1001007 50 active    levodopa 1001008 55 active    Combination   1) From the above data: a) Create a dataset “DEMOG”. b) Create a dataset “DEMOG_2” and represent the data in the variable drug as follows     alisporivir = “Drug A”      Ribavirin = “Drug B”      Combination = “Drug A + Drug B”      Dummy = “Null” c) Create a dataset “DEMOG_3” with female subjects receiving active treatment. d) Create a dataset “DEMOG_4” with subjects whose age is greater than or equal to 40. (#Hint: Either >= or GE can be used)         hi frnds, i'm just a beginner. i have tried these querries. Can anyone pls explain for the options b, c & d.Thanks. ... View more