data iowa_60_male;
length age survival 8.;
  input survival;
  male = 1;
  age = 17 + _n_ ;
cards;
.96394
.96246
.96088
.95919
.95739
.95557
.95380
.95215
.95065
.94927
.94797
.94670
.94541
.94408
.94270
.94126
.93976
.93816
.93646
.93461
.93260
.93041
.92801
.92538
.92250
.91928
.91564
.91153
.90688
.90168
.89596
.88976
.88310
.87598
.86833
.86007
.85107
.84126
.83058
.81092
.80654
.79308
.77859
.76307
.74650
.72890
.71029
.69071
.67016
.64865
.62621
.60286
.57863
.55359
.52779
.50117
.47366
.44524
.41599
.38611
;
run;
 

data iowa_60_female;
length age survival 8.;
  input survival;
  male = 0;
  age = 17 + _n_ ;
cards;
.97372
.97317
.97263
.97210
.97158
.97106
.97052
.96995
.96935
.96872
.96805
.96735
.96662
.96586
.96505
.96420
.96328
.96229
.96123
.96007
.95882
.95748
.95603
.95448
.95280
.95096
.94891
.94664
.94411
.94132
.93827
.93497
.93141
.92756
.92341
.91898
.91431
.90942
.90430
.89889
.89304
.88660
.87943
.87145
.86261
.85290
.84230
.83079
.81830
.80474
.79002
.77407
.75678
.73814
.71809
.69640
.67281
.64714
.61943
.58980
run;
data iowa_60_mortality;
  set iowa_60_male iowa_60_female;
run;