Table 4
Sensitivity (true positives) and specificity (true negatives) of non-registry-based in relation to registry-based linkage results, Manitoba and Ontario, 2006/2007

Manitoba
Registry (gold standard)
Linked to DAD
Table summary
This table displays the results of Registry (gold standard)
Linked to DAD. The information is grouped by Non-registry
Linked to DAD (appearing as row headers), Yes, No and Total (appearing as column headers).
Non-registry
Linked to DAD
Yes No Total
Yes a = true positive
28,428
b = false positive
2,848
31,276
No c = false negative
3,898
d = true negative
243,763
247,661
Total 32,326 246,611 278,937
Ontario
Registry (gold standard)
Linked to DAD
Table summary
This table displays the results of Registry (gold standard)
Linked to DAD. The information is grouped by Non-registry
Linked to DAD (appearing as row headers), Yes, No and Total (appearing as column headers).
Non-registry
Linked to DAD
Yes No Total
Yes a = true positive
106,968
b = false positive
9,366
116,334
No c = false negative
12,712
d = true negative
2,258,865
2,271,577
Total 119,680 2,268,231 2,387,911
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