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Table 5 False positive links, missed birth records and sensitivity of probabilistic record linkage by linkage cut cut-off values; females in the Children of the 1950's study linkage to SMR 2 maternity records.

From: How good is probabilistic record linkage to reconstruct reproductive histories? Results from the Aberdeen children of the 1950s study

Linkage cut-off point

Number of false positive links a

Number of missed birth records a

Sensitivity a

22

134

454

92%

23

91

617

89%

24

68

775

86%

25

61

926

83%

27

37

1169

84%

29

32

1422

74%

31

28

1777

68%

35

10

2940

53%

40

3

4383

21%

  1. a Calculated only for those 2604 women where information from both sources is available and who gave birth to 5533 children in Scotland.