Table 2.

Identifiers and Their Score for Agreement in Computer Linkage

Data Element	Abbreviation	Points
Year of birth	YOB	20
Month of birth	MOB	20
Day of birth	DYOB	20
First four letters of last name	F4	40
Fifth and higher letters of last name	F5	20
First initial of first name	I	20
Gender	G	10
Clinic	C	10
Total		160