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Table 3 128 keys based on components of SLK-581 and region

From: Empirical aspects of record linkage across multiple data sets using statistical linkage keys: the experience of the PIAC cohort study

Key no.

Key description(a)

Key no.

Key description(a)

Key no.

Key description(a)

1

s3g2|dmyob|s|pc

44

s3g2|__yob|s|st

87

_g2|__yob|_|pc2

2

s3g2|dmyob|_|pc

45

_g2|dmyob|s|st

88

__|__yob|_|pc

3

s3g2|dm_ob|s|pc

46

s3_|dm_ob|_|pc2

89

s3g2|___ob|_|_

4

s3g2|dmyob|s|pc2

47

s3g2|__yob|_|st

90

_g2|dm_ob|_|_

5

s3_|dmyob|s|pc

48

_g2|dmyob|_|st

91

s3_|_yob|_|_

6

s3g2|dm_ob|_|pc

49

_g2|__yob|s|pc

92

s3_|___ob|s|pc2

7

s3g2|dmyob|_|pc2

50

s3_|dm_ob|s|st

93

__|dmyob|_|_

8

s3_|dmyob|_|pc

51

s3g2|__yob|s|_

94

__|dm_ob|s|pc2

9

s3g2|dmyob|s|st

52

_g2|dmyob|s|_

95

_g2|__yob|s|st

10

s3g2|dmyob|_|st

53

_g2|__yob|_|pc

96

s3_|___ob|_|pc2

11

s3g2|__yob|s|pc

54

s3_|dm_ob|_|st

97

__|dm_ob|_|pc2

12

_g2|dmyob|s|pc

55

s3g2|__yob|_|_

98

_g2|__yob|_|st

13

s3g2|dmyob|s|_

56

s3g2|___ob|s|pc2

99

s3_|___ob|s|st

14

s3g2|__yob|_|pc

57

s3_|___ob|s|pc

100

__|dm_ob|s|st

15

_g2|dmyob|_|pc

58

_g2|dmyob|_|_

101

_g2|__yob|s|_

16

s3g2|dmyob|_|_

59

_g2|dm_ob|s|pc2

102

s3_|___ob|_|st

17

s3g2|dm_ob|s|pc2

60

__|dm_ob|s|pc

103

__|dm_ob|_|st

18

s3_|dm_ob|s|pc

61

s3_|__yob|s|pc2

104

_g2|__yob|_|_

19

s3_|dmyob|s|pc2

62

__|dmyob|s|pc2

105

_g2|___ob|s|pc2

20

s3g2|dm_ob|_|pc2

63

s3_|dm_ob|s|_

106

__|___ob|s|pc

21

s3_|dm_ob|_|pc

64

s3g2|___ob|_|pc2

107

__|__yob|s|pc2

22

s3_|dmyob|_|pc2

65

s3_|___ob|_|pc

108

s3_|___ob|s|_

23

s3g2|dm_ob|s|st

66

_g2|dm_ob|_|pc2

109

__|dm__ob|s|_

24

s3_|dmyob|s|st

67

__|dm_ob|_|pc

110

_g2|___ob|_|pc2

25

s3g2|dm_ob|_|st

68

s3_|__yob|_|pc2

111

__|___ob|_|pc

26

s3g2|___ob|s|pc

69

__|dmyob|_|pc2

112

__|__yob|_|pc2

27

s3_|dmyob|_|st

70

s3_|dm_ob|_|_

113

s3_|_ob|_|_

28

_g2|dm_ob|s|pc

71

s3g2|___ob|s|st

114

__|dm_ob|_|_

29

s3g2|__yob|2|pc2

72

_g2|dm_ob|s|st

115

_g2|___ob|s|st

30

s3_|__yob|s|pc

73

s3_|__yob|s|st

116

__|__yob|s|st

31

_g2|dmyob|s|pc2

74

__|dmyob|s|st

117

_g2|___ob|_|st

32

__|dmyob|s|pc

75

s3g2|___ob|_|st

118

__|__yob|_|st

33

s3g2|dm_ob|s|_

76

_g2|dm_ob|_|st

119

_g2|___ob|s|_

34

s3g2|___ob|_|pc

77

s3_|__yob|_|st

120

__|__yob|s|_

35

s3_|dmyob|s|_

78

_g2|___ob|s|pc

121

_g2|___ob|_|_

36

_g2|dm_ob|_|pc

79

__|dmyob|_|st

122

__|__yob|_|_

37

s3g2|__yob|_|pc2

80

_g2|__yob|s|pc2

123

__|___ob|s|pc2

38

s3_|__yob|_|pc

81

__|__yob|s|pc

124

__|___ob|_|pc2

39

_g2|dmyob|_|pc2

82

s3g2|___ob|s|_

125

__|___ob|s|st

40

__|dmyob|_|pc

83

_g2|dm_ob|s|_

126

__|___ob|_|st

41

s3g2|dm_ob|_|_

84

s3_|__yob|s|_

127

__|___ob|s|_

42

s3_|dmyob|_|_

85

_g2|___ob|_|pc

128

__|___ob|_|_

43

s3_|dm_ob|s|pc2

86

__|dmyob|s|_

  
  1. (a) Key is a concatenation of data elements, indicated as follows:
  2. • s3: the 2nd, 3rd and 5th letters of the family name substituting '2' for short names
  3. • g2: the 2nd and 3rd letters of the given name substituting '2' for short names
  4. • yob: year of birth
  5. • dmob: day and month of birth
  6. • s: sex
  7. • pc: 4 digit postcode
  8. • pc2: first two digits of 4 digit postcode
  9. • st: state
  10. • _: indicates that the component is not included in the match key.
  11. Note: Order is from multiplying the number of the largest categories that account for roughly half of the clients within each key element (s3: 204, g2: 20, dmob: 182, yob: 16, s: 1, st: 2, pc2: 8, pc: 290). Key 13 is SLK-581.