Table 2.

Definition of manually rated LOR features.

Value	Description
Positivity
Weak (0)	Trying to put positive spin
Positive (1)	Several positives but below average
Strong (2)	More positive than average
Very Strong (3)	Unusually positive; exceptional
Relevance
Minimal (0)	Little relevant info for making decision
Good (1)	Some relevant info for making decision
Excellent (2)	Extremely helpful for making decision
Specificity
Poor (0)	Form letter with almost no specifics
Average (1)	only a few specifics; knows casually
Good (2)	Several specific statements
Excellent (3)	Many specifics; knows applicant well