Assessing record linkage between health care and Vital Statistics databases using deterministic methods

Table 1 Linkage Rate (%) between Vital Statistics registry and Population registry

A combination of common identifiers		1998/99 (N = 4717)	1999/00 (N = 5024)	2000/01 (N = 5299)	2001/02 (N = 5182)
Surname, Sex and Date of Birth
Total		85.6	85.6	87.2	88.0
Sex:	Female	85.0	86.0	86.9	88.2
	Male	86.2	85.3	87.5	87.7
Age:	1 to 9 years	47.2	26.0	32.7	39.7
	10 to 19 years	70.5	77.8	67.4	66.7
	20 to 29 years	75.0	69.7	64.0	66.7
	30 to 39 years	86.4	80.1	80.9	82.8
	40 to 49 years	84.1	87.6	87.4	85.9
	50 to 64 years	83.2	85.6	87.2	88.0
	Over 65 years	87.2	87.5	89.0	90.0
First Name, Sex and Date of Birth
Total		78.8	79.5	81.2	82.4
Sex:	Female	76.6	78.0	80.1	81.7
	Male	80.9	81.0	82.2	83.2
Age:	1 to 9 years	41.5	26.0	34.6	36.5
	10 to 19 years	59.1	68.9	61.2	50.0
	20 to 29 years	70.0	71.6	67.4	73.1
	30 to 39 years	87.6	80.1	77.8	79.1
	40 to 49 years	83.7	83.0	87.0	84.0
	50 to 64 years	76.8	81.2	82.4	83.4
	Over 65 years	79.5	80.3	81.8	83.7
Surname, First Name, Sex and Date of Birth
Total		75.5	76.0	78.7	79.5
Sex:	Female	73.0	74.5	77.1	78.9
	Male	77.8	77.5	80.1	80.0
Age:	1 to 9 years	41.5	22.1	32.7	34.9
	10 to 19 years	52.3	60.0	51.0	47.0
	20 to 29 years	63.0	60.6	59.3	62.8
	30 to 39 years	79.9	73.3	71.6	71.6
	40 to 49 years	73.9	76.3	81.1	78.1
	50 to 64 years	72.2	76.9	78.8	79.4
	Over 65 years	77.2	77.8	80.2	81.5

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