Limitations of administrative databases.
Elliott R
ER
Haut
Peter J
PJ
Pronovost
Eric B
EB
Schneider
D059019:Clinical Coding / Q000706:statistics & numerical data*; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000175:diagnosis* / Q000401:mortality*; D012131:Respiratory Insufficiency / Q000175:diagnosis*; D018805:Sepsis / Q000175:diagnosis*