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Table 2 Krippendorff’s alpha and agreement

From: Reproducibility of African giant pouched rats detecting Mycobacterium tuberculosis

  Krippendorff’s alpha Observed agreement Expected agreement N Decisions
Group 1
 All .344 .683 .517 56,155
 Positive .437 .783 .615 8844
 Negative .26 .611 .52 51,612
 AFB .454 .745 .533 1606
 1+ .441 .773 .594 3674
 2+ .38 .809 .692 3344
 3+ .328 .845 .771 220
Group 2
 All .232 .657 .561 74,404
 Positive .285 .681 .553 9900
 Negative .152 .654 .592 64,504
 AFB .268 .637 .504 1991
 1+ .289 .678 .547 4103
 2+ .252 .709 .611 3531
 3+ .174 .667 .597 275