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Table 5 Match results from stepwise matching for first 50 steps for PIAC stage 3

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

Step Linkage key Matches Step Linkage key Matches
1 key_601 45031 26 key_610 15
2 key_601_2 904 27 key_610_2 .
3 key_601_3 1357 28 key_616 1
4 key_601_4 26 29 key_616_2 .
5 key_604 5151 30 key_617 113
6 key_604_2 99 31 key_617_2 2
7 key_604_3 . 32 key_617_3 6
8 key_604_4 146 33 key_617_4 .
9 key_609 2027 34 key_605 725
10 key_609_2 28 35 key_605_2 22
11 key_613 257 36 key_605_3 30
12 key_613_2 3 37 key_605_4 1
13 key_602 383 38 key_608 6
14 key_602_2 13 39 key_620 2
15 key_602_3 4 40 key_618 30
16 key_602_4 . 41 key_612 227
17 key_603 883 42 key_612_2 1
18 key_603_2 12 43 key_612_3 7
19 key_603_3 19 44 key_612_4 .
20 key_603_4 1 45 key_611 1697
21 key_606 8 46 key_611_2 13
22 key_607 36 47 key_611_3 52
23 key_607_2 . 48 key_611_4 1
24 key_607_3 3 49 key_615 3
25 key_607_4 . 50 key_623 53
Summary of results  
Matches with aged care assessment date (steps 1-105) 60780
Matches with assessment team identifier (steps 106-188) 7255
Other matches (steps 189-215) 8254
Total matches 76289
  1. Legend for linkage key suffixes:
  2. No suffix: linkage used preferred RCCP SLK-581 and preferred postcode
  3. _2: linkage used alternative RCCP SLK-581 and preferred postcode
  4. _3: linkage used preferred RCCP SLK-581 and alternative postcode
  5. _4: linkage used alternative RCCP SLK-581 and alternative postcode
  6. Note: See Table 3 for definition of keys. '600' series linkage keys use assessment date. Order of use is based on the joint unique key rate in Table 4. Table showing results for all selected keys is available from the authors on request.