= 'Died before discharge'
0 = No
1 = Yes

0 = Male
1 = Female

1 = White
2 = Black
3 = Other

= 'Service at ICU Admission'
0 = Medical
1 = Surgery

= 'Type of Admission'
0 = Elective
1 = Emergency

= 'PO2, inital Blood Gases'
0 = >60
1 = <=60

= 'PH, inital Blood Gases'
0 = >=7.25
1 = <7.25

= 'PCO2, inital Blood Gases'
0 = <=45
1 = >45

= 'Consciousness at ICU'
0 = None
1 = Stupor
2 = Coma

= 'Creatinine, inital Blood'
0 = <=2
1 = >2