ID Age Ala Aba Cas       1 12 1 1 0       2 26 3 5 0       3 50 2 3 1       4 15 1 6 1       5 26 1 23 0       6 52 2 6 0       7 32 3 5 0       8 30 2 8 1       9 25 1 2 0       10 63 3 22 1                       Aba (range from 1-24)             Ala (1-low, 2-medium, 3-high)           Cas (0 - Yes, 1-No)                             Proc logistic data=Participants;       Class Ala(ref= ‘1’) Aba(ref= ‘1’) / param=reference; model Cas (ref= ‘0’) = Ala aba / scale=none aggregate; run;                 what code can I use to construct a logistic regression to find an association of Cas on Ala and Aba individually? I have the above code now but it doesn't seem right.  ... View more

How do you find proportions in sas with the if statement. Say you given couple of numbers say 1 to 50 with a variable named BMI, how do you find proportions of i) BMI < 25, ii)at least 25 but less than 30 and iii) 30 or greater?    25.24..20.2320.272730222523242223262121192021202530243518...85.5355.5158567159465175476823.21.25.2323.172022.2720282922.192624211921232022251914.231917272933.2024.262624212121243102620.22282329029232023.22232322192123.2626.02521193320232419230202229263819252322..2025242121   BMI 25.06 . 24.21 . . 19.84 . 23.23 20.33 . 27.46 27.44 29.95 22.44 24.96 23.17 24.21 22.31 23.38 25.74 20.80 21.03 19.00 19.85 21.03 20.48 24.63 30.11 23.73 34.97 18.48 . . . 84.50 . 53.06 54.61 . 51.35 58.23 56.36 70.89 58.57 46.49 50.50 74.55 46.76 68.20 23.11 . 20.63 . 25.49 . 23.23 22.89 . 17.16 19.84 21.95 . 27.19 19.57 28.36 29.26 22.49 . 18.79 25.82 23.71 20.80 19.48 20.50 22.59 20.23 21.70 25.06 19.14 14.12 . 23.05 19.13 16.95 26.78 29.05 33.20 . 19.57 24.33 . 26.38 26.25 23.57 21.14 20.80 21.45 24.09 30.54 0.00 25.66 19.97 . 21.63 27.89 22.71 29.05 0.00 29.18 22.66 19.97 22.80 . 21.87 22.80 23.38 21.56 19.02 20.77 23.04 . 25.92 26.29 3045.06 0.00 25.00 20.90 18.95 33.47 20.47 22.59 23.77 18.88 23.17 0.00 20.47 22.46 29.26 25.93 37.65 19.39 24.96 22.67 22.04 . . 19.58 24.51 23.99 21.45 20.98       ... View more