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Table 4 Agreement between self-tester interpreted result and observer interpreted result (N = 678)

From: An observed, prospective field study to evaluate the performance and acceptance of a blood-based HIV self-test in Canada

  Observer Interpreted Result
Participant Interpreted Result Negative Positive Do not know/Not sure Invalid/Test did not work Total
Negative 602 0 6 6 614
Positive 2 5 0 1 8
Do not know/Not sure 8 0 4 6 18
Invalid/test did not work 15 0 1 22 38
Total 627 5 11 35 678