Table 2 Blocking efficiency
From: Accuracy and completeness of patient pathways – the benefits of national data linkage in Australia
Linkage Comparison Summary | NSW | WA | SA | QLD | Total | |
|---|---|---|---|---|---|---|
Number of records supplied for linkage: | ||||||
Hospital | 19,874,083 | 6,772,949 | 2,509,914 | 14,573,677 | 43,730,623 | |
Mortality | 434,584 | 62,216 | 62,668 | 143,130 | 702,598 | |
Total | 20,308,667 | 6,835,165 | 2,572,582 | 14,716,807 | 44,433,221 | |
Linkage comparison space: | ||||||
Blocked Comparisons | 26,071,726,251 | 6,328,711,086 | 821,279,963 | 13,597,405,294 | 142,112,536,420 | |
Reduction Ratio | 0.99987 | 0.99973 | 0.99975 | 0.99987 | 0.99986 | |
Possible Pairs Blocked (%) | 0.0126 % | 0.0271 % | 0.0248 % | 0.0126 % | 0.0144 % | |
‘True’ Pairs Blocked (%)a | 99.76 % | 99.95 % | - | - | - | |