RT Journal
A1 Katz MH
T1 Good prediction rules are hard to find: Did we succeed?
JF Archives of Internal Medicine
JO Archives of Internal Medicine
YR 2012
FD November 12
VO 172
IS 20
SP 1536
OP 1536
DO 10.1001/2013.jamainternmed.120
UL http://dx.doi.org/10.1001/2013.jamainternmed.120
AB 
We believe that the PLAN score (a clinical prediction rule comprising preadmission comorbidities, level of consciousness, age, and neurologic deficit) for ischemic stroke,2 while not perfect, will be of use to clinicians. As Grady and Berkowitz noted, prediction rules should use data from patients who are representative of those for whom the rule will be used. The PLAN prediction rule for ischemic stroke was developed on the basis of data from consecutive patients from the Registry of the Canadian Stoke Network.